/export/starexec/sandbox2/solver/bin/starexec_run_rcdcRelativeAlsoLower /export/starexec/sandbox2/benchmark/theBenchmark.xml /export/starexec/sandbox2/output/output_files


--------------------------------------------------------------------------------


KILLED
proof of /export/starexec/sandbox2/benchmark/theBenchmark.xml
# AProVE Commit ID: 794c25de1cacf0d048858bcd21c9a779e1221865 marcel 20200619 unpublished dirty


The Derivational Complexity (innermost) of the given DCpxTrs could be proven to be BOUNDS(1, INF).

(0) DCpxTrs
(1) DerivationalComplexityToRuntimeComplexityProof [BOTH BOUNDS(ID, ID), 0 ms]
(2) CpxRelTRS
(3) SInnermostTerminationProof [BOTH CONCRETE BOUNDS(ID, ID), 151 ms]
(4) CpxRelTRS
(5) RenamingProof [BOTH BOUNDS(ID, ID), 0 ms]
(6) CpxRelTRS
    (7) TypeInferenceProof [BOTH BOUNDS(ID, ID), 0 ms]
    (8) typed CpxTrs
    (9) OrderProof [LOWER BOUND(ID), 0 ms]
    (10) typed CpxTrs
    (11) RewriteLemmaProof [LOWER BOUND(ID), 2269 ms]
    (12) BOUNDS(1, INF)
(13) RelTrsToDecreasingLoopProblemProof [LOWER BOUND(ID), 0 ms]
(14) TRS for Loop Detection
(15) RelTrsToTrsProof [UPPER BOUND(ID), 0 ms]
(16) CpxTRS
(17) NonCtorToCtorProof [UPPER BOUND(ID), 0 ms]
(18) CpxRelTRS
    (19) RelTrsToWeightedTrsProof [BOTH BOUNDS(ID, ID), 0 ms]
    (20) CpxWeightedTrs
    (21) TypeInferenceProof [BOTH BOUNDS(ID, ID), 0 ms]
    (22) CpxTypedWeightedTrs
    (23) CompletionProof [UPPER BOUND(ID), 0 ms]
    (24) CpxTypedWeightedCompleteTrs
        (25) NarrowingProof [BOTH BOUNDS(ID, ID), 0 ms]
        (26) CpxTypedWeightedCompleteTrs
        (27) CpxTypedWeightedTrsToRntsProof [UPPER BOUND(ID), 0 ms]
        (28) CpxRNTS
        (29) SimplificationProof [BOTH BOUNDS(ID, ID), 0 ms]
        (30) CpxRNTS
    (31) CompletionProof [UPPER BOUND(ID), 0 ms]
    (32) CpxTypedWeightedCompleteTrs
        (33) CpxTypedWeightedTrsToRntsProof [UPPER BOUND(ID), 3 ms]
        (34) CpxRNTS
(35) CpxTrsToCdtProof [UPPER BOUND(ID), 0 ms]
(36) CdtProblem
    (37) CdtLeafRemovalProof [BOTH BOUNDS(ID, ID), 0 ms]
    (38) CdtProblem
    (39) CdtGraphSplitRhsProof [BOTH BOUNDS(ID, ID), 1 ms]
    (40) CdtProblem
    (41) CdtLeafRemovalProof [ComplexityIfPolyImplication, 0 ms]
    (42) CdtProblem
    (43) CdtUsableRulesProof [BOTH BOUNDS(ID, ID), 0 ms]
    (44) CdtProblem
    (45) CdtNarrowingProof [BOTH BOUNDS(ID, ID), 0 ms]
    (46) CdtProblem
    (47) CdtRhsSimplificationProcessorProof [BOTH BOUNDS(ID, ID), 0 ms]
    (48) CdtProblem
    (49) CdtNarrowingProof [BOTH BOUNDS(ID, ID), 0 ms]
    (50) CdtProblem
    (51) CdtLeafRemovalProof [BOTH BOUNDS(ID, ID), 0 ms]
    (52) CdtProblem
    (53) CdtNarrowingProof [BOTH BOUNDS(ID, ID), 0 ms]
    (54) CdtProblem
    (55) CdtRhsSimplificationProcessorProof [BOTH BOUNDS(ID, ID), 0 ms]
    (56) CdtProblem
    (57) CdtNarrowingProof [BOTH BOUNDS(ID, ID), 0 ms]
    (58) CdtProblem
    (59) CdtRhsSimplificationProcessorProof [BOTH BOUNDS(ID, ID), 0 ms]
    (60) CdtProblem
    (61) CdtNarrowingProof [BOTH BOUNDS(ID, ID), 0 ms]
    (62) CdtProblem
    (63) CdtLeafRemovalProof [BOTH BOUNDS(ID, ID), 0 ms]
    (64) CdtProblem
    (65) CdtRhsSimplificationProcessorProof [BOTH BOUNDS(ID, ID), 0 ms]
    (66) CdtProblem
    (67) CdtNarrowingProof [BOTH BOUNDS(ID, ID), 0 ms]
    (68) CdtProblem
    (69) CdtLeafRemovalProof [BOTH BOUNDS(ID, ID), 0 ms]
    (70) CdtProblem
    (71) CdtRhsSimplificationProcessorProof [BOTH BOUNDS(ID, ID), 0 ms]
    (72) CdtProblem
    (73) CdtNarrowingProof [BOTH BOUNDS(ID, ID), 0 ms]
    (74) CdtProblem
    (75) CdtLeafRemovalProof [BOTH BOUNDS(ID, ID), 0 ms]
    (76) CdtProblem
    (77) CdtRhsSimplificationProcessorProof [BOTH BOUNDS(ID, ID), 0 ms]
    (78) CdtProblem
    (79) CdtNarrowingProof [BOTH BOUNDS(ID, ID), 0 ms]
    (80) CdtProblem
    (81) CdtLeafRemovalProof [ComplexityIfPolyImplication, 0 ms]
    (82) CdtProblem
    (83) CdtNarrowingProof [BOTH BOUNDS(ID, ID), 0 ms]
    (84) CdtProblem
    (85) CdtLeafRemovalProof [ComplexityIfPolyImplication, 0 ms]
    (86) CdtProblem
    (87) CdtNarrowingProof [BOTH BOUNDS(ID, ID), 0 ms]
    (88) CdtProblem
    (89) CdtLeafRemovalProof [ComplexityIfPolyImplication, 0 ms]
    (90) CdtProblem
    (91) CdtNarrowingProof [BOTH BOUNDS(ID, ID), 0 ms]
    (92) CdtProblem
    (93) CdtLeafRemovalProof [BOTH BOUNDS(ID, ID), 0 ms]
    (94) CdtProblem
    (95) CdtNarrowingProof [BOTH BOUNDS(ID, ID), 0 ms]
    (96) CdtProblem
    (97) CdtLeafRemovalProof [BOTH BOUNDS(ID, ID), 0 ms]
    (98) CdtProblem
    (99) CdtRewritingProof [BOTH BOUNDS(ID, ID), 0 ms]
    (100) CdtProblem
    (101) CdtRewritingProof [BOTH BOUNDS(ID, ID), 0 ms]
    (102) CdtProblem
    (103) CdtRewritingProof [BOTH BOUNDS(ID, ID), 14 ms]
    (104) CdtProblem
    (105) CdtRewritingProof [BOTH BOUNDS(ID, ID), 6 ms]
    (106) CdtProblem
    (107) CdtForwardInstantiationProof [BOTH BOUNDS(ID, ID), 19 ms]
    (108) CdtProblem
    (109) CdtForwardInstantiationProof [BOTH BOUNDS(ID, ID), 0 ms]
    (110) CdtProblem
    (111) CdtForwardInstantiationProof [BOTH BOUNDS(ID, ID), 223 ms]
    (112) CdtProblem
    (113) CdtForwardInstantiationProof [BOTH BOUNDS(ID, ID), 883 ms]
    (114) CdtProblem
    (115) CdtForwardInstantiationProof [BOTH BOUNDS(ID, ID), 6470 ms]
    (116) CdtProblem
    (117) CdtForwardInstantiationProof [BOTH BOUNDS(ID, ID), 1586 ms]
    (118) CdtProblem
    (119) CdtForwardInstantiationProof [BOTH BOUNDS(ID, ID), 3010 ms]
    (120) CdtProblem
    (121) CdtForwardInstantiationProof [BOTH BOUNDS(ID, ID), 7053 ms]
    (122) CdtProblem


----------------------------------------

(0)
Obligation:
The Derivational Complexity (innermost) of the given DCpxTrs could be proven to be BOUNDS(1, INF).


The TRS R consists of the following rules:

   f(f(f(a, x), y), z) -> f(f(x, z), f(y, z))
   f(f(b, x), y) -> x
   f(c, y) -> y

S is empty.
Rewrite Strategy: INNERMOST
----------------------------------------

(1) DerivationalComplexityToRuntimeComplexityProof (BOTH BOUNDS(ID, ID))
The following rules have been added to S to convert the given derivational complexity problem to a runtime complexity problem:

   encArg(a) -> a
   encArg(b) -> b
   encArg(c) -> c
   encArg(cons_f(x_1, x_2)) -> f(encArg(x_1), encArg(x_2))
   encode_f(x_1, x_2) -> f(encArg(x_1), encArg(x_2))
   encode_a -> a
   encode_b -> b
   encode_c -> c


----------------------------------------

(2)
Obligation:
The Runtime Complexity (innermost) of the given CpxRelTRS could be proven to be BOUNDS(1, INF).


The TRS R consists of the following rules:

   f(f(f(a, x), y), z) -> f(f(x, z), f(y, z))
   f(f(b, x), y) -> x
   f(c, y) -> y

The (relative) TRS S consists of the following rules:

   encArg(a) -> a
   encArg(b) -> b
   encArg(c) -> c
   encArg(cons_f(x_1, x_2)) -> f(encArg(x_1), encArg(x_2))
   encode_f(x_1, x_2) -> f(encArg(x_1), encArg(x_2))
   encode_a -> a
   encode_b -> b
   encode_c -> c

Rewrite Strategy: INNERMOST
----------------------------------------

(3) SInnermostTerminationProof (BOTH CONCRETE BOUNDS(ID, ID))
proved innermost termination of relative rules
----------------------------------------

(4)
Obligation:
The Runtime Complexity (innermost) of the given CpxRelTRS could be proven to be BOUNDS(1, INF).


The TRS R consists of the following rules:

   f(f(f(a, x), y), z) -> f(f(x, z), f(y, z))
   f(f(b, x), y) -> x
   f(c, y) -> y

The (relative) TRS S consists of the following rules:

   encArg(a) -> a
   encArg(b) -> b
   encArg(c) -> c
   encArg(cons_f(x_1, x_2)) -> f(encArg(x_1), encArg(x_2))
   encode_f(x_1, x_2) -> f(encArg(x_1), encArg(x_2))
   encode_a -> a
   encode_b -> b
   encode_c -> c

Rewrite Strategy: INNERMOST
----------------------------------------

(5) RenamingProof (BOTH BOUNDS(ID, ID))
Renamed function symbols to avoid clashes with predefined symbol.
----------------------------------------

(6)
Obligation:
The Runtime Complexity (innermost) of the given CpxRelTRS could be proven to be BOUNDS(1, INF).


The TRS R consists of the following rules:

   f(f(f(a, x), y), z) -> f(f(x, z), f(y, z))
   f(f(b, x), y) -> x
   f(c, y) -> y

The (relative) TRS S consists of the following rules:

   encArg(a) -> a
   encArg(b) -> b
   encArg(c) -> c
   encArg(cons_f(x_1, x_2)) -> f(encArg(x_1), encArg(x_2))
   encode_f(x_1, x_2) -> f(encArg(x_1), encArg(x_2))
   encode_a -> a
   encode_b -> b
   encode_c -> c

Rewrite Strategy: INNERMOST
----------------------------------------

(7) TypeInferenceProof (BOTH BOUNDS(ID, ID))
Infered types.
----------------------------------------

(8)
Obligation:
Innermost TRS:
Rules:
f(f(f(a, x), y), z) -> f(f(x, z), f(y, z))
f(f(b, x), y) -> x
f(c, y) -> y
encArg(a) -> a
encArg(b) -> b
encArg(c) -> c
encArg(cons_f(x_1, x_2)) -> f(encArg(x_1), encArg(x_2))
encode_f(x_1, x_2) -> f(encArg(x_1), encArg(x_2))
encode_a -> a
encode_b -> b
encode_c -> c

Types:
f :: a:b:c:cons_f -> a:b:c:cons_f -> a:b:c:cons_f
a :: a:b:c:cons_f
b :: a:b:c:cons_f
c :: a:b:c:cons_f
encArg :: a:b:c:cons_f -> a:b:c:cons_f
cons_f :: a:b:c:cons_f -> a:b:c:cons_f -> a:b:c:cons_f
encode_f :: a:b:c:cons_f -> a:b:c:cons_f -> a:b:c:cons_f
encode_a :: a:b:c:cons_f
encode_b :: a:b:c:cons_f
encode_c :: a:b:c:cons_f
hole_a:b:c:cons_f1_0 :: a:b:c:cons_f
gen_a:b:c:cons_f2_0 :: Nat -> a:b:c:cons_f

----------------------------------------

(9) OrderProof (LOWER BOUND(ID))
Heuristically decided to analyse the following defined symbols:
f, encArg

They will be analysed ascendingly in the following order:
f < encArg

----------------------------------------

(10)
Obligation:
Innermost TRS:
Rules:
f(f(f(a, x), y), z) -> f(f(x, z), f(y, z))
f(f(b, x), y) -> x
f(c, y) -> y
encArg(a) -> a
encArg(b) -> b
encArg(c) -> c
encArg(cons_f(x_1, x_2)) -> f(encArg(x_1), encArg(x_2))
encode_f(x_1, x_2) -> f(encArg(x_1), encArg(x_2))
encode_a -> a
encode_b -> b
encode_c -> c

Types:
f :: a:b:c:cons_f -> a:b:c:cons_f -> a:b:c:cons_f
a :: a:b:c:cons_f
b :: a:b:c:cons_f
c :: a:b:c:cons_f
encArg :: a:b:c:cons_f -> a:b:c:cons_f
cons_f :: a:b:c:cons_f -> a:b:c:cons_f -> a:b:c:cons_f
encode_f :: a:b:c:cons_f -> a:b:c:cons_f -> a:b:c:cons_f
encode_a :: a:b:c:cons_f
encode_b :: a:b:c:cons_f
encode_c :: a:b:c:cons_f
hole_a:b:c:cons_f1_0 :: a:b:c:cons_f
gen_a:b:c:cons_f2_0 :: Nat -> a:b:c:cons_f


Generator Equations:
gen_a:b:c:cons_f2_0(0) <=> a
gen_a:b:c:cons_f2_0(+(x, 1)) <=> cons_f(a, gen_a:b:c:cons_f2_0(x))


The following defined symbols remain to be analysed:
f, encArg

They will be analysed ascendingly in the following order:
f < encArg

----------------------------------------

(11) RewriteLemmaProof (LOWER BOUND(ID))
Proved the following rewrite lemma:
encArg(gen_a:b:c:cons_f2_0(n21_0)) -> *3_0, rt in Omega(0)

Induction Base:
encArg(gen_a:b:c:cons_f2_0(0))

Induction Step:
encArg(gen_a:b:c:cons_f2_0(+(n21_0, 1))) ->_R^Omega(0)
f(encArg(a), encArg(gen_a:b:c:cons_f2_0(n21_0))) ->_R^Omega(0)
f(a, encArg(gen_a:b:c:cons_f2_0(n21_0))) ->_IH
f(a, *3_0)

We have rt in Omega(1) and sz in O(n). Thus, we have irc_R in Omega(n^0).
----------------------------------------

(12)
BOUNDS(1, INF)

----------------------------------------

(13) RelTrsToDecreasingLoopProblemProof (LOWER BOUND(ID))
Transformed a relative TRS into a decreasing-loop problem.
----------------------------------------

(14)
Obligation:
Analyzing the following TRS for decreasing loops:

The Runtime Complexity (innermost) of the given CpxRelTRS could be proven to be BOUNDS(1, INF).


The TRS R consists of the following rules:

   f(f(f(a, x), y), z) -> f(f(x, z), f(y, z))
   f(f(b, x), y) -> x
   f(c, y) -> y

The (relative) TRS S consists of the following rules:

   encArg(a) -> a
   encArg(b) -> b
   encArg(c) -> c
   encArg(cons_f(x_1, x_2)) -> f(encArg(x_1), encArg(x_2))
   encode_f(x_1, x_2) -> f(encArg(x_1), encArg(x_2))
   encode_a -> a
   encode_b -> b
   encode_c -> c

Rewrite Strategy: INNERMOST
----------------------------------------

(15) RelTrsToTrsProof (UPPER BOUND(ID))
transformed relative TRS to TRS
----------------------------------------

(16)
Obligation:
The Runtime Complexity (innermost) of the given CpxTRS could be proven to be BOUNDS(1, INF).


The TRS R consists of the following rules:

   f(f(f(a, x), y), z) -> f(f(x, z), f(y, z))
   f(f(b, x), y) -> x
   f(c, y) -> y
   encArg(a) -> a
   encArg(b) -> b
   encArg(c) -> c
   encArg(cons_f(x_1, x_2)) -> f(encArg(x_1), encArg(x_2))
   encode_f(x_1, x_2) -> f(encArg(x_1), encArg(x_2))
   encode_a -> a
   encode_b -> b
   encode_c -> c

S is empty.
Rewrite Strategy: INNERMOST
----------------------------------------

(17) NonCtorToCtorProof (UPPER BOUND(ID))
transformed non-ctor to ctor-system
----------------------------------------

(18)
Obligation:
The Runtime Complexity (innermost) of the given CpxRelTRS could be proven to be BOUNDS(1, INF).


The TRS R consists of the following rules:

   f(c, y) -> y
   f(c_f(c_f(a, x), y), z) -> f(f(x, z), f(y, z))
   f(c_f(b, x), y) -> x

The (relative) TRS S consists of the following rules:

   encArg(a) -> a
   encArg(b) -> b
   encArg(c) -> c
   encArg(cons_f(x_1, x_2)) -> f(encArg(x_1), encArg(x_2))
   encode_f(x_1, x_2) -> f(encArg(x_1), encArg(x_2))
   encode_a -> a
   encode_b -> b
   encode_c -> c
   f(x0, x1) -> c_f(x0, x1)

Rewrite Strategy: INNERMOST
----------------------------------------

(19) RelTrsToWeightedTrsProof (BOTH BOUNDS(ID, ID))
Transformed relative TRS to weighted TRS
----------------------------------------

(20)
Obligation:
The Runtime Complexity (innermost) of the given CpxWeightedTrs could be proven to be BOUNDS(1, INF).


The TRS R consists of the following rules:

   f(c, y) -> y [1]
   f(c_f(c_f(a, x), y), z) -> f(f(x, z), f(y, z)) [1]
   f(c_f(b, x), y) -> x [1]
   encArg(a) -> a [0]
   encArg(b) -> b [0]
   encArg(c) -> c [0]
   encArg(cons_f(x_1, x_2)) -> f(encArg(x_1), encArg(x_2)) [0]
   encode_f(x_1, x_2) -> f(encArg(x_1), encArg(x_2)) [0]
   encode_a -> a [0]
   encode_b -> b [0]
   encode_c -> c [0]
   f(x0, x1) -> c_f(x0, x1) [0]

Rewrite Strategy: INNERMOST
----------------------------------------

(21) TypeInferenceProof (BOTH BOUNDS(ID, ID))
Infered types.
----------------------------------------

(22)
Obligation:
Runtime Complexity Weighted TRS with Types.
The TRS R consists of the following rules:

   f(c, y) -> y [1]
   f(c_f(c_f(a, x), y), z) -> f(f(x, z), f(y, z)) [1]
   f(c_f(b, x), y) -> x [1]
   encArg(a) -> a [0]
   encArg(b) -> b [0]
   encArg(c) -> c [0]
   encArg(cons_f(x_1, x_2)) -> f(encArg(x_1), encArg(x_2)) [0]
   encode_f(x_1, x_2) -> f(encArg(x_1), encArg(x_2)) [0]
   encode_a -> a [0]
   encode_b -> b [0]
   encode_c -> c [0]
   f(x0, x1) -> c_f(x0, x1) [0]

The TRS has the following type information:
f :: c:a:c_f:b:cons_f -> c:a:c_f:b:cons_f -> c:a:c_f:b:cons_f
c :: c:a:c_f:b:cons_f
c_f :: c:a:c_f:b:cons_f -> c:a:c_f:b:cons_f -> c:a:c_f:b:cons_f
a :: c:a:c_f:b:cons_f
b :: c:a:c_f:b:cons_f
encArg :: c:a:c_f:b:cons_f -> c:a:c_f:b:cons_f
cons_f :: c:a:c_f:b:cons_f -> c:a:c_f:b:cons_f -> c:a:c_f:b:cons_f
encode_f :: c:a:c_f:b:cons_f -> c:a:c_f:b:cons_f -> c:a:c_f:b:cons_f
encode_a :: c:a:c_f:b:cons_f
encode_b :: c:a:c_f:b:cons_f
encode_c :: c:a:c_f:b:cons_f

Rewrite Strategy: INNERMOST
----------------------------------------

(23) CompletionProof (UPPER BOUND(ID))
The transformation into a RNTS is sound, since:

(a) The obligation is a constructor system where every type has a constant constructor,

(b) The following defined symbols do not have to be completely defined, as they can never occur inside other defined symbols:
none

(c) The following functions are completely defined:

   encArg_1
   encode_f_2
   encode_a
   encode_b
   encode_c
   f_2

Due to the following rules being added:

   encArg(v0) -> null_encArg [0]
   encode_f(v0, v1) -> null_encode_f [0]
   encode_a -> null_encode_a [0]
   encode_b -> null_encode_b [0]
   encode_c -> null_encode_c [0]
   f(v0, v1) -> null_f [0]

And the following fresh constants:    null_encArg, null_encode_f, null_encode_a, null_encode_b, null_encode_c, null_f

----------------------------------------

(24)
Obligation:
Runtime Complexity Weighted TRS where critical functions are completely defined. The underlying TRS is:

Runtime Complexity Weighted TRS with Types.
The TRS R consists of the following rules:

   f(c, y) -> y [1]
   f(c_f(c_f(a, x), y), z) -> f(f(x, z), f(y, z)) [1]
   f(c_f(b, x), y) -> x [1]
   encArg(a) -> a [0]
   encArg(b) -> b [0]
   encArg(c) -> c [0]
   encArg(cons_f(x_1, x_2)) -> f(encArg(x_1), encArg(x_2)) [0]
   encode_f(x_1, x_2) -> f(encArg(x_1), encArg(x_2)) [0]
   encode_a -> a [0]
   encode_b -> b [0]
   encode_c -> c [0]
   f(x0, x1) -> c_f(x0, x1) [0]
   encArg(v0) -> null_encArg [0]
   encode_f(v0, v1) -> null_encode_f [0]
   encode_a -> null_encode_a [0]
   encode_b -> null_encode_b [0]
   encode_c -> null_encode_c [0]
   f(v0, v1) -> null_f [0]

The TRS has the following type information:
f :: c:a:c_f:b:cons_f:null_encArg:null_encode_f:null_encode_a:null_encode_b:null_encode_c:null_f -> c:a:c_f:b:cons_f:null_encArg:null_encode_f:null_encode_a:null_encode_b:null_encode_c:null_f -> c:a:c_f:b:cons_f:null_encArg:null_encode_f:null_encode_a:null_encode_b:null_encode_c:null_f
c :: c:a:c_f:b:cons_f:null_encArg:null_encode_f:null_encode_a:null_encode_b:null_encode_c:null_f
c_f :: c:a:c_f:b:cons_f:null_encArg:null_encode_f:null_encode_a:null_encode_b:null_encode_c:null_f -> c:a:c_f:b:cons_f:null_encArg:null_encode_f:null_encode_a:null_encode_b:null_encode_c:null_f -> c:a:c_f:b:cons_f:null_encArg:null_encode_f:null_encode_a:null_encode_b:null_encode_c:null_f
a :: c:a:c_f:b:cons_f:null_encArg:null_encode_f:null_encode_a:null_encode_b:null_encode_c:null_f
b :: c:a:c_f:b:cons_f:null_encArg:null_encode_f:null_encode_a:null_encode_b:null_encode_c:null_f
encArg :: c:a:c_f:b:cons_f:null_encArg:null_encode_f:null_encode_a:null_encode_b:null_encode_c:null_f -> c:a:c_f:b:cons_f:null_encArg:null_encode_f:null_encode_a:null_encode_b:null_encode_c:null_f
cons_f :: c:a:c_f:b:cons_f:null_encArg:null_encode_f:null_encode_a:null_encode_b:null_encode_c:null_f -> c:a:c_f:b:cons_f:null_encArg:null_encode_f:null_encode_a:null_encode_b:null_encode_c:null_f -> c:a:c_f:b:cons_f:null_encArg:null_encode_f:null_encode_a:null_encode_b:null_encode_c:null_f
encode_f :: c:a:c_f:b:cons_f:null_encArg:null_encode_f:null_encode_a:null_encode_b:null_encode_c:null_f -> c:a:c_f:b:cons_f:null_encArg:null_encode_f:null_encode_a:null_encode_b:null_encode_c:null_f -> c:a:c_f:b:cons_f:null_encArg:null_encode_f:null_encode_a:null_encode_b:null_encode_c:null_f
encode_a :: c:a:c_f:b:cons_f:null_encArg:null_encode_f:null_encode_a:null_encode_b:null_encode_c:null_f
encode_b :: c:a:c_f:b:cons_f:null_encArg:null_encode_f:null_encode_a:null_encode_b:null_encode_c:null_f
encode_c :: c:a:c_f:b:cons_f:null_encArg:null_encode_f:null_encode_a:null_encode_b:null_encode_c:null_f
null_encArg :: c:a:c_f:b:cons_f:null_encArg:null_encode_f:null_encode_a:null_encode_b:null_encode_c:null_f
null_encode_f :: c:a:c_f:b:cons_f:null_encArg:null_encode_f:null_encode_a:null_encode_b:null_encode_c:null_f
null_encode_a :: c:a:c_f:b:cons_f:null_encArg:null_encode_f:null_encode_a:null_encode_b:null_encode_c:null_f
null_encode_b :: c:a:c_f:b:cons_f:null_encArg:null_encode_f:null_encode_a:null_encode_b:null_encode_c:null_f
null_encode_c :: c:a:c_f:b:cons_f:null_encArg:null_encode_f:null_encode_a:null_encode_b:null_encode_c:null_f
null_f :: c:a:c_f:b:cons_f:null_encArg:null_encode_f:null_encode_a:null_encode_b:null_encode_c:null_f

Rewrite Strategy: INNERMOST
----------------------------------------

(25) NarrowingProof (BOTH BOUNDS(ID, ID))
Narrowed the inner basic terms of all right-hand sides by a single narrowing step.
----------------------------------------

(26)
Obligation:
Runtime Complexity Weighted TRS where critical functions are completely defined. The underlying TRS is:

Runtime Complexity Weighted TRS with Types.
The TRS R consists of the following rules:

   f(c, y) -> y [1]
   f(c_f(c_f(a, x), y), z) -> f(f(x, z), f(y, z)) [1]
   f(c_f(b, x), y) -> x [1]
   encArg(a) -> a [0]
   encArg(b) -> b [0]
   encArg(c) -> c [0]
   encArg(cons_f(x_1, x_2)) -> f(encArg(x_1), encArg(x_2)) [0]
   encode_f(x_1, x_2) -> f(encArg(x_1), encArg(x_2)) [0]
   encode_a -> a [0]
   encode_b -> b [0]
   encode_c -> c [0]
   f(x0, x1) -> c_f(x0, x1) [0]
   encArg(v0) -> null_encArg [0]
   encode_f(v0, v1) -> null_encode_f [0]
   encode_a -> null_encode_a [0]
   encode_b -> null_encode_b [0]
   encode_c -> null_encode_c [0]
   f(v0, v1) -> null_f [0]

The TRS has the following type information:
f :: c:a:c_f:b:cons_f:null_encArg:null_encode_f:null_encode_a:null_encode_b:null_encode_c:null_f -> c:a:c_f:b:cons_f:null_encArg:null_encode_f:null_encode_a:null_encode_b:null_encode_c:null_f -> c:a:c_f:b:cons_f:null_encArg:null_encode_f:null_encode_a:null_encode_b:null_encode_c:null_f
c :: c:a:c_f:b:cons_f:null_encArg:null_encode_f:null_encode_a:null_encode_b:null_encode_c:null_f
c_f :: c:a:c_f:b:cons_f:null_encArg:null_encode_f:null_encode_a:null_encode_b:null_encode_c:null_f -> c:a:c_f:b:cons_f:null_encArg:null_encode_f:null_encode_a:null_encode_b:null_encode_c:null_f -> c:a:c_f:b:cons_f:null_encArg:null_encode_f:null_encode_a:null_encode_b:null_encode_c:null_f
a :: c:a:c_f:b:cons_f:null_encArg:null_encode_f:null_encode_a:null_encode_b:null_encode_c:null_f
b :: c:a:c_f:b:cons_f:null_encArg:null_encode_f:null_encode_a:null_encode_b:null_encode_c:null_f
encArg :: c:a:c_f:b:cons_f:null_encArg:null_encode_f:null_encode_a:null_encode_b:null_encode_c:null_f -> c:a:c_f:b:cons_f:null_encArg:null_encode_f:null_encode_a:null_encode_b:null_encode_c:null_f
cons_f :: c:a:c_f:b:cons_f:null_encArg:null_encode_f:null_encode_a:null_encode_b:null_encode_c:null_f -> c:a:c_f:b:cons_f:null_encArg:null_encode_f:null_encode_a:null_encode_b:null_encode_c:null_f -> c:a:c_f:b:cons_f:null_encArg:null_encode_f:null_encode_a:null_encode_b:null_encode_c:null_f
encode_f :: c:a:c_f:b:cons_f:null_encArg:null_encode_f:null_encode_a:null_encode_b:null_encode_c:null_f -> c:a:c_f:b:cons_f:null_encArg:null_encode_f:null_encode_a:null_encode_b:null_encode_c:null_f -> c:a:c_f:b:cons_f:null_encArg:null_encode_f:null_encode_a:null_encode_b:null_encode_c:null_f
encode_a :: c:a:c_f:b:cons_f:null_encArg:null_encode_f:null_encode_a:null_encode_b:null_encode_c:null_f
encode_b :: c:a:c_f:b:cons_f:null_encArg:null_encode_f:null_encode_a:null_encode_b:null_encode_c:null_f
encode_c :: c:a:c_f:b:cons_f:null_encArg:null_encode_f:null_encode_a:null_encode_b:null_encode_c:null_f
null_encArg :: c:a:c_f:b:cons_f:null_encArg:null_encode_f:null_encode_a:null_encode_b:null_encode_c:null_f
null_encode_f :: c:a:c_f:b:cons_f:null_encArg:null_encode_f:null_encode_a:null_encode_b:null_encode_c:null_f
null_encode_a :: c:a:c_f:b:cons_f:null_encArg:null_encode_f:null_encode_a:null_encode_b:null_encode_c:null_f
null_encode_b :: c:a:c_f:b:cons_f:null_encArg:null_encode_f:null_encode_a:null_encode_b:null_encode_c:null_f
null_encode_c :: c:a:c_f:b:cons_f:null_encArg:null_encode_f:null_encode_a:null_encode_b:null_encode_c:null_f
null_f :: c:a:c_f:b:cons_f:null_encArg:null_encode_f:null_encode_a:null_encode_b:null_encode_c:null_f

Rewrite Strategy: INNERMOST
----------------------------------------

(27) CpxTypedWeightedTrsToRntsProof (UPPER BOUND(ID))
Transformed the TRS into an over-approximating RNTS by (improved) Size Abstraction.
The constant constructors are abstracted as follows:

   c => 2
   a => 0
   b => 1
   null_encArg => 0
   null_encode_f => 0
   null_encode_a => 0
   null_encode_b => 0
   null_encode_c => 0
   null_f => 0

----------------------------------------

(28)
Obligation:
Complexity RNTS consisting of the following rules:

   encArg(z') -{ 0 }-> f(encArg(x_1), encArg(x_2)) :|: x_1 >= 0, x_2 >= 0, z' = 1 + x_1 + x_2
   encArg(z') -{ 0 }-> 2 :|: z' = 2
   encArg(z') -{ 0 }-> 1 :|: z' = 1
   encArg(z') -{ 0 }-> 0 :|: z' = 0
   encArg(z') -{ 0 }-> 0 :|: v0 >= 0, z' = v0
   encode_a -{ 0 }-> 0 :|: 
   encode_b -{ 0 }-> 1 :|: 
   encode_b -{ 0 }-> 0 :|: 
   encode_c -{ 0 }-> 2 :|: 
   encode_c -{ 0 }-> 0 :|: 
   encode_f(z', z'') -{ 0 }-> f(encArg(x_1), encArg(x_2)) :|: x_1 >= 0, z' = x_1, x_2 >= 0, z'' = x_2
   encode_f(z', z'') -{ 0 }-> 0 :|: v0 >= 0, v1 >= 0, z'' = v1, z' = v0
   f(z', z'') -{ 1 }-> x :|: z'' = y, z' = 1 + 1 + x, x >= 0, y >= 0
   f(z', z'') -{ 1 }-> y :|: z' = 2, z'' = y, y >= 0
   f(z', z'') -{ 1 }-> f(f(x, z), f(y, z)) :|: z'' = z, z >= 0, z' = 1 + (1 + 0 + x) + y, x >= 0, y >= 0
   f(z', z'') -{ 0 }-> 0 :|: v0 >= 0, v1 >= 0, z'' = v1, z' = v0
   f(z', z'') -{ 0 }-> 1 + x0 + x1 :|: z'' = x1, x0 >= 0, x1 >= 0, z' = x0


----------------------------------------

(29) SimplificationProof (BOTH BOUNDS(ID, ID))
Simplified the RNTS by moving equalities from the constraints into the right-hand sides.
----------------------------------------

(30)
Obligation:
Complexity RNTS consisting of the following rules:

   encArg(z') -{ 0 }-> f(encArg(x_1), encArg(x_2)) :|: x_1 >= 0, x_2 >= 0, z' = 1 + x_1 + x_2
   encArg(z') -{ 0 }-> 2 :|: z' = 2
   encArg(z') -{ 0 }-> 1 :|: z' = 1
   encArg(z') -{ 0 }-> 0 :|: z' = 0
   encArg(z') -{ 0 }-> 0 :|: z' >= 0
   encode_a -{ 0 }-> 0 :|: 
   encode_b -{ 0 }-> 1 :|: 
   encode_b -{ 0 }-> 0 :|: 
   encode_c -{ 0 }-> 2 :|: 
   encode_c -{ 0 }-> 0 :|: 
   encode_f(z', z'') -{ 0 }-> f(encArg(z'), encArg(z'')) :|: z' >= 0, z'' >= 0
   encode_f(z', z'') -{ 0 }-> 0 :|: z' >= 0, z'' >= 0
   f(z', z'') -{ 1 }-> z'' :|: z' = 2, z'' >= 0
   f(z', z'') -{ 1 }-> f(f(x, z''), f(y, z'')) :|: z'' >= 0, z' = 1 + (1 + 0 + x) + y, x >= 0, y >= 0
   f(z', z'') -{ 0 }-> 0 :|: z' >= 0, z'' >= 0
   f(z', z'') -{ 1 }-> z' - 2 :|: z' - 2 >= 0, z'' >= 0
   f(z', z'') -{ 0 }-> 1 + z' + z'' :|: z' >= 0, z'' >= 0


----------------------------------------

(31) CompletionProof (UPPER BOUND(ID))
The TRS is a completely defined constructor system, as every type has a constant constructor and the following rules were added:

   encArg(v0) -> null_encArg [0]
   encode_f(v0, v1) -> null_encode_f [0]
   encode_a -> null_encode_a [0]
   encode_b -> null_encode_b [0]
   encode_c -> null_encode_c [0]
   f(v0, v1) -> null_f [0]

And the following fresh constants:    null_encArg, null_encode_f, null_encode_a, null_encode_b, null_encode_c, null_f

----------------------------------------

(32)
Obligation:
Runtime Complexity Weighted TRS where all functions are completely defined. The underlying TRS is:

Runtime Complexity Weighted TRS with Types.
The TRS R consists of the following rules:

   f(c, y) -> y [1]
   f(c_f(c_f(a, x), y), z) -> f(f(x, z), f(y, z)) [1]
   f(c_f(b, x), y) -> x [1]
   encArg(a) -> a [0]
   encArg(b) -> b [0]
   encArg(c) -> c [0]
   encArg(cons_f(x_1, x_2)) -> f(encArg(x_1), encArg(x_2)) [0]
   encode_f(x_1, x_2) -> f(encArg(x_1), encArg(x_2)) [0]
   encode_a -> a [0]
   encode_b -> b [0]
   encode_c -> c [0]
   f(x0, x1) -> c_f(x0, x1) [0]
   encArg(v0) -> null_encArg [0]
   encode_f(v0, v1) -> null_encode_f [0]
   encode_a -> null_encode_a [0]
   encode_b -> null_encode_b [0]
   encode_c -> null_encode_c [0]
   f(v0, v1) -> null_f [0]

The TRS has the following type information:
f :: c:a:c_f:b:cons_f:null_encArg:null_encode_f:null_encode_a:null_encode_b:null_encode_c:null_f -> c:a:c_f:b:cons_f:null_encArg:null_encode_f:null_encode_a:null_encode_b:null_encode_c:null_f -> c:a:c_f:b:cons_f:null_encArg:null_encode_f:null_encode_a:null_encode_b:null_encode_c:null_f
c :: c:a:c_f:b:cons_f:null_encArg:null_encode_f:null_encode_a:null_encode_b:null_encode_c:null_f
c_f :: c:a:c_f:b:cons_f:null_encArg:null_encode_f:null_encode_a:null_encode_b:null_encode_c:null_f -> c:a:c_f:b:cons_f:null_encArg:null_encode_f:null_encode_a:null_encode_b:null_encode_c:null_f -> c:a:c_f:b:cons_f:null_encArg:null_encode_f:null_encode_a:null_encode_b:null_encode_c:null_f
a :: c:a:c_f:b:cons_f:null_encArg:null_encode_f:null_encode_a:null_encode_b:null_encode_c:null_f
b :: c:a:c_f:b:cons_f:null_encArg:null_encode_f:null_encode_a:null_encode_b:null_encode_c:null_f
encArg :: c:a:c_f:b:cons_f:null_encArg:null_encode_f:null_encode_a:null_encode_b:null_encode_c:null_f -> c:a:c_f:b:cons_f:null_encArg:null_encode_f:null_encode_a:null_encode_b:null_encode_c:null_f
cons_f :: c:a:c_f:b:cons_f:null_encArg:null_encode_f:null_encode_a:null_encode_b:null_encode_c:null_f -> c:a:c_f:b:cons_f:null_encArg:null_encode_f:null_encode_a:null_encode_b:null_encode_c:null_f -> c:a:c_f:b:cons_f:null_encArg:null_encode_f:null_encode_a:null_encode_b:null_encode_c:null_f
encode_f :: c:a:c_f:b:cons_f:null_encArg:null_encode_f:null_encode_a:null_encode_b:null_encode_c:null_f -> c:a:c_f:b:cons_f:null_encArg:null_encode_f:null_encode_a:null_encode_b:null_encode_c:null_f -> c:a:c_f:b:cons_f:null_encArg:null_encode_f:null_encode_a:null_encode_b:null_encode_c:null_f
encode_a :: c:a:c_f:b:cons_f:null_encArg:null_encode_f:null_encode_a:null_encode_b:null_encode_c:null_f
encode_b :: c:a:c_f:b:cons_f:null_encArg:null_encode_f:null_encode_a:null_encode_b:null_encode_c:null_f
encode_c :: c:a:c_f:b:cons_f:null_encArg:null_encode_f:null_encode_a:null_encode_b:null_encode_c:null_f
null_encArg :: c:a:c_f:b:cons_f:null_encArg:null_encode_f:null_encode_a:null_encode_b:null_encode_c:null_f
null_encode_f :: c:a:c_f:b:cons_f:null_encArg:null_encode_f:null_encode_a:null_encode_b:null_encode_c:null_f
null_encode_a :: c:a:c_f:b:cons_f:null_encArg:null_encode_f:null_encode_a:null_encode_b:null_encode_c:null_f
null_encode_b :: c:a:c_f:b:cons_f:null_encArg:null_encode_f:null_encode_a:null_encode_b:null_encode_c:null_f
null_encode_c :: c:a:c_f:b:cons_f:null_encArg:null_encode_f:null_encode_a:null_encode_b:null_encode_c:null_f
null_f :: c:a:c_f:b:cons_f:null_encArg:null_encode_f:null_encode_a:null_encode_b:null_encode_c:null_f

Rewrite Strategy: INNERMOST
----------------------------------------

(33) CpxTypedWeightedTrsToRntsProof (UPPER BOUND(ID))
Transformed the TRS into an over-approximating RNTS by (improved) Size Abstraction.
The constant constructors are abstracted as follows:

   c => 2
   a => 0
   b => 1
   null_encArg => 0
   null_encode_f => 0
   null_encode_a => 0
   null_encode_b => 0
   null_encode_c => 0
   null_f => 0

----------------------------------------

(34)
Obligation:
Complexity RNTS consisting of the following rules:

   encArg(z') -{ 0 }-> f(encArg(x_1), encArg(x_2)) :|: x_1 >= 0, x_2 >= 0, z' = 1 + x_1 + x_2
   encArg(z') -{ 0 }-> 2 :|: z' = 2
   encArg(z') -{ 0 }-> 1 :|: z' = 1
   encArg(z') -{ 0 }-> 0 :|: z' = 0
   encArg(z') -{ 0 }-> 0 :|: v0 >= 0, z' = v0
   encode_a -{ 0 }-> 0 :|: 
   encode_b -{ 0 }-> 1 :|: 
   encode_b -{ 0 }-> 0 :|: 
   encode_c -{ 0 }-> 2 :|: 
   encode_c -{ 0 }-> 0 :|: 
   encode_f(z', z'') -{ 0 }-> f(encArg(x_1), encArg(x_2)) :|: x_1 >= 0, z' = x_1, x_2 >= 0, z'' = x_2
   encode_f(z', z'') -{ 0 }-> 0 :|: v0 >= 0, v1 >= 0, z'' = v1, z' = v0
   f(z', z'') -{ 1 }-> x :|: z'' = y, z' = 1 + 1 + x, x >= 0, y >= 0
   f(z', z'') -{ 1 }-> y :|: z' = 2, z'' = y, y >= 0
   f(z', z'') -{ 1 }-> f(f(x, z), f(y, z)) :|: z'' = z, z >= 0, z' = 1 + (1 + 0 + x) + y, x >= 0, y >= 0
   f(z', z'') -{ 0 }-> 0 :|: v0 >= 0, v1 >= 0, z'' = v1, z' = v0
   f(z', z'') -{ 0 }-> 1 + x0 + x1 :|: z'' = x1, x0 >= 0, x1 >= 0, z' = x0

Only complete derivations are relevant for the runtime complexity.

----------------------------------------

(35) CpxTrsToCdtProof (UPPER BOUND(ID))
Converted Cpx (relative) TRS to CDT
----------------------------------------

(36)
Obligation:
Complexity Dependency Tuples Problem

Rules:
   encArg(a) -> a
   encArg(b) -> b
   encArg(c) -> c
   encArg(cons_f(z0, z1)) -> f(encArg(z0), encArg(z1))
   encode_f(z0, z1) -> f(encArg(z0), encArg(z1))
   encode_a -> a
   encode_b -> b
   encode_c -> c
   f(f(f(a, z0), z1), z2) -> f(f(z0, z2), f(z1, z2))
   f(f(b, z0), z1) -> z0
   f(c, z0) -> z0
Tuples:
   ENCARG(a) -> c1
   ENCARG(b) -> c2
   ENCARG(c) -> c3
   ENCARG(cons_f(z0, z1)) -> c4(F(encArg(z0), encArg(z1)), ENCARG(z0), ENCARG(z1))
   ENCODE_F(z0, z1) -> c5(F(encArg(z0), encArg(z1)), ENCARG(z0), ENCARG(z1))
   ENCODE_A -> c6
   ENCODE_B -> c7
   ENCODE_C -> c8
   F(f(f(a, z0), z1), z2) -> c9(F(f(z0, z2), f(z1, z2)), F(z0, z2), F(z1, z2))
   F(f(b, z0), z1) -> c10
   F(c, z0) -> c11
S tuples:
   F(f(f(a, z0), z1), z2) -> c9(F(f(z0, z2), f(z1, z2)), F(z0, z2), F(z1, z2))
   F(f(b, z0), z1) -> c10
   F(c, z0) -> c11
K tuples:none
Defined Rule Symbols:   f_2, encArg_1, encode_f_2, encode_a, encode_b, encode_c

Defined Pair Symbols:   ENCARG_1, ENCODE_F_2, ENCODE_A, ENCODE_B, ENCODE_C, F_2

Compound Symbols:   c1, c2, c3, c4_3, c5_3, c6, c7, c8, c9_3, c10, c11


----------------------------------------

(37) CdtLeafRemovalProof (BOTH BOUNDS(ID, ID))
Removed 6 trailing nodes:
   ENCODE_C -> c8
   ENCODE_A -> c6
   ENCARG(c) -> c3
   ENCARG(b) -> c2
   ENCARG(a) -> c1
   ENCODE_B -> c7

----------------------------------------

(38)
Obligation:
Complexity Dependency Tuples Problem

Rules:
   encArg(a) -> a
   encArg(b) -> b
   encArg(c) -> c
   encArg(cons_f(z0, z1)) -> f(encArg(z0), encArg(z1))
   encode_f(z0, z1) -> f(encArg(z0), encArg(z1))
   encode_a -> a
   encode_b -> b
   encode_c -> c
   f(f(f(a, z0), z1), z2) -> f(f(z0, z2), f(z1, z2))
   f(f(b, z0), z1) -> z0
   f(c, z0) -> z0
Tuples:
   ENCARG(cons_f(z0, z1)) -> c4(F(encArg(z0), encArg(z1)), ENCARG(z0), ENCARG(z1))
   ENCODE_F(z0, z1) -> c5(F(encArg(z0), encArg(z1)), ENCARG(z0), ENCARG(z1))
   F(f(f(a, z0), z1), z2) -> c9(F(f(z0, z2), f(z1, z2)), F(z0, z2), F(z1, z2))
   F(f(b, z0), z1) -> c10
   F(c, z0) -> c11
S tuples:
   F(f(f(a, z0), z1), z2) -> c9(F(f(z0, z2), f(z1, z2)), F(z0, z2), F(z1, z2))
   F(f(b, z0), z1) -> c10
   F(c, z0) -> c11
K tuples:none
Defined Rule Symbols:   f_2, encArg_1, encode_f_2, encode_a, encode_b, encode_c

Defined Pair Symbols:   ENCARG_1, ENCODE_F_2, F_2

Compound Symbols:   c4_3, c5_3, c9_3, c10, c11


----------------------------------------

(39) CdtGraphSplitRhsProof (BOTH BOUNDS(ID, ID))
Split RHS of tuples not part of any SCC
----------------------------------------

(40)
Obligation:
Complexity Dependency Tuples Problem

Rules:
   encArg(a) -> a
   encArg(b) -> b
   encArg(c) -> c
   encArg(cons_f(z0, z1)) -> f(encArg(z0), encArg(z1))
   encode_f(z0, z1) -> f(encArg(z0), encArg(z1))
   encode_a -> a
   encode_b -> b
   encode_c -> c
   f(f(f(a, z0), z1), z2) -> f(f(z0, z2), f(z1, z2))
   f(f(b, z0), z1) -> z0
   f(c, z0) -> z0
Tuples:
   ENCARG(cons_f(z0, z1)) -> c4(F(encArg(z0), encArg(z1)), ENCARG(z0), ENCARG(z1))
   F(f(f(a, z0), z1), z2) -> c9(F(f(z0, z2), f(z1, z2)), F(z0, z2), F(z1, z2))
   F(f(b, z0), z1) -> c10
   F(c, z0) -> c11
   ENCODE_F(z0, z1) -> c1(F(encArg(z0), encArg(z1)))
   ENCODE_F(z0, z1) -> c1(ENCARG(z0))
   ENCODE_F(z0, z1) -> c1(ENCARG(z1))
S tuples:
   F(f(f(a, z0), z1), z2) -> c9(F(f(z0, z2), f(z1, z2)), F(z0, z2), F(z1, z2))
   F(f(b, z0), z1) -> c10
   F(c, z0) -> c11
K tuples:none
Defined Rule Symbols:   f_2, encArg_1, encode_f_2, encode_a, encode_b, encode_c

Defined Pair Symbols:   ENCARG_1, F_2, ENCODE_F_2

Compound Symbols:   c4_3, c9_3, c10, c11, c1_1


----------------------------------------

(41) CdtLeafRemovalProof (ComplexityIfPolyImplication)
Removed 2 leading nodes:
   ENCODE_F(z0, z1) -> c1(ENCARG(z0))
   ENCODE_F(z0, z1) -> c1(ENCARG(z1))

----------------------------------------

(42)
Obligation:
Complexity Dependency Tuples Problem

Rules:
   encArg(a) -> a
   encArg(b) -> b
   encArg(c) -> c
   encArg(cons_f(z0, z1)) -> f(encArg(z0), encArg(z1))
   encode_f(z0, z1) -> f(encArg(z0), encArg(z1))
   encode_a -> a
   encode_b -> b
   encode_c -> c
   f(f(f(a, z0), z1), z2) -> f(f(z0, z2), f(z1, z2))
   f(f(b, z0), z1) -> z0
   f(c, z0) -> z0
Tuples:
   ENCARG(cons_f(z0, z1)) -> c4(F(encArg(z0), encArg(z1)), ENCARG(z0), ENCARG(z1))
   F(f(f(a, z0), z1), z2) -> c9(F(f(z0, z2), f(z1, z2)), F(z0, z2), F(z1, z2))
   F(f(b, z0), z1) -> c10
   F(c, z0) -> c11
   ENCODE_F(z0, z1) -> c1(F(encArg(z0), encArg(z1)))
S tuples:
   F(f(f(a, z0), z1), z2) -> c9(F(f(z0, z2), f(z1, z2)), F(z0, z2), F(z1, z2))
   F(f(b, z0), z1) -> c10
   F(c, z0) -> c11
K tuples:none
Defined Rule Symbols:   f_2, encArg_1, encode_f_2, encode_a, encode_b, encode_c

Defined Pair Symbols:   ENCARG_1, F_2, ENCODE_F_2

Compound Symbols:   c4_3, c9_3, c10, c11, c1_1


----------------------------------------

(43) CdtUsableRulesProof (BOTH BOUNDS(ID, ID))
The following rules are not usable and were removed:
   encode_f(z0, z1) -> f(encArg(z0), encArg(z1))
   encode_a -> a
   encode_b -> b
   encode_c -> c

----------------------------------------

(44)
Obligation:
Complexity Dependency Tuples Problem

Rules:
   encArg(a) -> a
   encArg(b) -> b
   encArg(c) -> c
   encArg(cons_f(z0, z1)) -> f(encArg(z0), encArg(z1))
   f(f(f(a, z0), z1), z2) -> f(f(z0, z2), f(z1, z2))
   f(f(b, z0), z1) -> z0
   f(c, z0) -> z0
Tuples:
   ENCARG(cons_f(z0, z1)) -> c4(F(encArg(z0), encArg(z1)), ENCARG(z0), ENCARG(z1))
   F(f(f(a, z0), z1), z2) -> c9(F(f(z0, z2), f(z1, z2)), F(z0, z2), F(z1, z2))
   F(f(b, z0), z1) -> c10
   F(c, z0) -> c11
   ENCODE_F(z0, z1) -> c1(F(encArg(z0), encArg(z1)))
S tuples:
   F(f(f(a, z0), z1), z2) -> c9(F(f(z0, z2), f(z1, z2)), F(z0, z2), F(z1, z2))
   F(f(b, z0), z1) -> c10
   F(c, z0) -> c11
K tuples:none
Defined Rule Symbols:   encArg_1, f_2

Defined Pair Symbols:   ENCARG_1, F_2, ENCODE_F_2

Compound Symbols:   c4_3, c9_3, c10, c11, c1_1


----------------------------------------

(45) CdtNarrowingProof (BOTH BOUNDS(ID, ID))
Use narrowing to replace ENCARG(cons_f(z0, z1)) -> c4(F(encArg(z0), encArg(z1)), ENCARG(z0), ENCARG(z1)) by 
   ENCARG(cons_f(x0, a)) -> c4(F(encArg(x0), a), ENCARG(x0), ENCARG(a))
   ENCARG(cons_f(x0, b)) -> c4(F(encArg(x0), b), ENCARG(x0), ENCARG(b))
   ENCARG(cons_f(x0, c)) -> c4(F(encArg(x0), c), ENCARG(x0), ENCARG(c))
   ENCARG(cons_f(x0, cons_f(z0, z1))) -> c4(F(encArg(x0), f(encArg(z0), encArg(z1))), ENCARG(x0), ENCARG(cons_f(z0, z1)))
   ENCARG(cons_f(a, x1)) -> c4(F(a, encArg(x1)), ENCARG(a), ENCARG(x1))
   ENCARG(cons_f(b, x1)) -> c4(F(b, encArg(x1)), ENCARG(b), ENCARG(x1))
   ENCARG(cons_f(c, x1)) -> c4(F(c, encArg(x1)), ENCARG(c), ENCARG(x1))
   ENCARG(cons_f(cons_f(z0, z1), x1)) -> c4(F(f(encArg(z0), encArg(z1)), encArg(x1)), ENCARG(cons_f(z0, z1)), ENCARG(x1))

----------------------------------------

(46)
Obligation:
Complexity Dependency Tuples Problem

Rules:
   encArg(a) -> a
   encArg(b) -> b
   encArg(c) -> c
   encArg(cons_f(z0, z1)) -> f(encArg(z0), encArg(z1))
   f(f(f(a, z0), z1), z2) -> f(f(z0, z2), f(z1, z2))
   f(f(b, z0), z1) -> z0
   f(c, z0) -> z0
Tuples:
   F(f(f(a, z0), z1), z2) -> c9(F(f(z0, z2), f(z1, z2)), F(z0, z2), F(z1, z2))
   F(f(b, z0), z1) -> c10
   F(c, z0) -> c11
   ENCODE_F(z0, z1) -> c1(F(encArg(z0), encArg(z1)))
   ENCARG(cons_f(x0, a)) -> c4(F(encArg(x0), a), ENCARG(x0), ENCARG(a))
   ENCARG(cons_f(x0, b)) -> c4(F(encArg(x0), b), ENCARG(x0), ENCARG(b))
   ENCARG(cons_f(x0, c)) -> c4(F(encArg(x0), c), ENCARG(x0), ENCARG(c))
   ENCARG(cons_f(x0, cons_f(z0, z1))) -> c4(F(encArg(x0), f(encArg(z0), encArg(z1))), ENCARG(x0), ENCARG(cons_f(z0, z1)))
   ENCARG(cons_f(a, x1)) -> c4(F(a, encArg(x1)), ENCARG(a), ENCARG(x1))
   ENCARG(cons_f(b, x1)) -> c4(F(b, encArg(x1)), ENCARG(b), ENCARG(x1))
   ENCARG(cons_f(c, x1)) -> c4(F(c, encArg(x1)), ENCARG(c), ENCARG(x1))
   ENCARG(cons_f(cons_f(z0, z1), x1)) -> c4(F(f(encArg(z0), encArg(z1)), encArg(x1)), ENCARG(cons_f(z0, z1)), ENCARG(x1))
S tuples:
   F(f(f(a, z0), z1), z2) -> c9(F(f(z0, z2), f(z1, z2)), F(z0, z2), F(z1, z2))
   F(f(b, z0), z1) -> c10
   F(c, z0) -> c11
K tuples:none
Defined Rule Symbols:   encArg_1, f_2

Defined Pair Symbols:   F_2, ENCODE_F_2, ENCARG_1

Compound Symbols:   c9_3, c10, c11, c1_1, c4_3


----------------------------------------

(47) CdtRhsSimplificationProcessorProof (BOTH BOUNDS(ID, ID))
Removed 8 trailing tuple parts
----------------------------------------

(48)
Obligation:
Complexity Dependency Tuples Problem

Rules:
   encArg(a) -> a
   encArg(b) -> b
   encArg(c) -> c
   encArg(cons_f(z0, z1)) -> f(encArg(z0), encArg(z1))
   f(f(f(a, z0), z1), z2) -> f(f(z0, z2), f(z1, z2))
   f(f(b, z0), z1) -> z0
   f(c, z0) -> z0
Tuples:
   F(f(f(a, z0), z1), z2) -> c9(F(f(z0, z2), f(z1, z2)), F(z0, z2), F(z1, z2))
   F(f(b, z0), z1) -> c10
   F(c, z0) -> c11
   ENCODE_F(z0, z1) -> c1(F(encArg(z0), encArg(z1)))
   ENCARG(cons_f(x0, cons_f(z0, z1))) -> c4(F(encArg(x0), f(encArg(z0), encArg(z1))), ENCARG(x0), ENCARG(cons_f(z0, z1)))
   ENCARG(cons_f(cons_f(z0, z1), x1)) -> c4(F(f(encArg(z0), encArg(z1)), encArg(x1)), ENCARG(cons_f(z0, z1)), ENCARG(x1))
   ENCARG(cons_f(x0, a)) -> c4(F(encArg(x0), a), ENCARG(x0))
   ENCARG(cons_f(x0, b)) -> c4(F(encArg(x0), b), ENCARG(x0))
   ENCARG(cons_f(x0, c)) -> c4(F(encArg(x0), c), ENCARG(x0))
   ENCARG(cons_f(a, x1)) -> c4(ENCARG(x1))
   ENCARG(cons_f(b, x1)) -> c4(ENCARG(x1))
   ENCARG(cons_f(c, x1)) -> c4(F(c, encArg(x1)), ENCARG(x1))
S tuples:
   F(f(f(a, z0), z1), z2) -> c9(F(f(z0, z2), f(z1, z2)), F(z0, z2), F(z1, z2))
   F(f(b, z0), z1) -> c10
   F(c, z0) -> c11
K tuples:none
Defined Rule Symbols:   encArg_1, f_2

Defined Pair Symbols:   F_2, ENCODE_F_2, ENCARG_1

Compound Symbols:   c9_3, c10, c11, c1_1, c4_3, c4_2, c4_1


----------------------------------------

(49) CdtNarrowingProof (BOTH BOUNDS(ID, ID))
Use narrowing to replace ENCODE_F(z0, z1) -> c1(F(encArg(z0), encArg(z1))) by 
   ENCODE_F(x0, a) -> c1(F(encArg(x0), a))
   ENCODE_F(x0, b) -> c1(F(encArg(x0), b))
   ENCODE_F(x0, c) -> c1(F(encArg(x0), c))
   ENCODE_F(x0, cons_f(z0, z1)) -> c1(F(encArg(x0), f(encArg(z0), encArg(z1))))
   ENCODE_F(a, x1) -> c1(F(a, encArg(x1)))
   ENCODE_F(b, x1) -> c1(F(b, encArg(x1)))
   ENCODE_F(c, x1) -> c1(F(c, encArg(x1)))
   ENCODE_F(cons_f(z0, z1), x1) -> c1(F(f(encArg(z0), encArg(z1)), encArg(x1)))

----------------------------------------

(50)
Obligation:
Complexity Dependency Tuples Problem

Rules:
   encArg(a) -> a
   encArg(b) -> b
   encArg(c) -> c
   encArg(cons_f(z0, z1)) -> f(encArg(z0), encArg(z1))
   f(f(f(a, z0), z1), z2) -> f(f(z0, z2), f(z1, z2))
   f(f(b, z0), z1) -> z0
   f(c, z0) -> z0
Tuples:
   F(f(f(a, z0), z1), z2) -> c9(F(f(z0, z2), f(z1, z2)), F(z0, z2), F(z1, z2))
   F(f(b, z0), z1) -> c10
   F(c, z0) -> c11
   ENCARG(cons_f(x0, cons_f(z0, z1))) -> c4(F(encArg(x0), f(encArg(z0), encArg(z1))), ENCARG(x0), ENCARG(cons_f(z0, z1)))
   ENCARG(cons_f(cons_f(z0, z1), x1)) -> c4(F(f(encArg(z0), encArg(z1)), encArg(x1)), ENCARG(cons_f(z0, z1)), ENCARG(x1))
   ENCARG(cons_f(x0, a)) -> c4(F(encArg(x0), a), ENCARG(x0))
   ENCARG(cons_f(x0, b)) -> c4(F(encArg(x0), b), ENCARG(x0))
   ENCARG(cons_f(x0, c)) -> c4(F(encArg(x0), c), ENCARG(x0))
   ENCARG(cons_f(a, x1)) -> c4(ENCARG(x1))
   ENCARG(cons_f(b, x1)) -> c4(ENCARG(x1))
   ENCARG(cons_f(c, x1)) -> c4(F(c, encArg(x1)), ENCARG(x1))
   ENCODE_F(x0, a) -> c1(F(encArg(x0), a))
   ENCODE_F(x0, b) -> c1(F(encArg(x0), b))
   ENCODE_F(x0, c) -> c1(F(encArg(x0), c))
   ENCODE_F(x0, cons_f(z0, z1)) -> c1(F(encArg(x0), f(encArg(z0), encArg(z1))))
   ENCODE_F(a, x1) -> c1(F(a, encArg(x1)))
   ENCODE_F(b, x1) -> c1(F(b, encArg(x1)))
   ENCODE_F(c, x1) -> c1(F(c, encArg(x1)))
   ENCODE_F(cons_f(z0, z1), x1) -> c1(F(f(encArg(z0), encArg(z1)), encArg(x1)))
S tuples:
   F(f(f(a, z0), z1), z2) -> c9(F(f(z0, z2), f(z1, z2)), F(z0, z2), F(z1, z2))
   F(f(b, z0), z1) -> c10
   F(c, z0) -> c11
K tuples:none
Defined Rule Symbols:   encArg_1, f_2

Defined Pair Symbols:   F_2, ENCARG_1, ENCODE_F_2

Compound Symbols:   c9_3, c10, c11, c4_3, c4_2, c4_1, c1_1


----------------------------------------

(51) CdtLeafRemovalProof (BOTH BOUNDS(ID, ID))
Removed 2 trailing nodes:
   ENCODE_F(b, x1) -> c1(F(b, encArg(x1)))
   ENCODE_F(a, x1) -> c1(F(a, encArg(x1)))

----------------------------------------

(52)
Obligation:
Complexity Dependency Tuples Problem

Rules:
   encArg(a) -> a
   encArg(b) -> b
   encArg(c) -> c
   encArg(cons_f(z0, z1)) -> f(encArg(z0), encArg(z1))
   f(f(f(a, z0), z1), z2) -> f(f(z0, z2), f(z1, z2))
   f(f(b, z0), z1) -> z0
   f(c, z0) -> z0
Tuples:
   F(f(f(a, z0), z1), z2) -> c9(F(f(z0, z2), f(z1, z2)), F(z0, z2), F(z1, z2))
   F(f(b, z0), z1) -> c10
   F(c, z0) -> c11
   ENCARG(cons_f(x0, cons_f(z0, z1))) -> c4(F(encArg(x0), f(encArg(z0), encArg(z1))), ENCARG(x0), ENCARG(cons_f(z0, z1)))
   ENCARG(cons_f(cons_f(z0, z1), x1)) -> c4(F(f(encArg(z0), encArg(z1)), encArg(x1)), ENCARG(cons_f(z0, z1)), ENCARG(x1))
   ENCARG(cons_f(x0, a)) -> c4(F(encArg(x0), a), ENCARG(x0))
   ENCARG(cons_f(x0, b)) -> c4(F(encArg(x0), b), ENCARG(x0))
   ENCARG(cons_f(x0, c)) -> c4(F(encArg(x0), c), ENCARG(x0))
   ENCARG(cons_f(a, x1)) -> c4(ENCARG(x1))
   ENCARG(cons_f(b, x1)) -> c4(ENCARG(x1))
   ENCARG(cons_f(c, x1)) -> c4(F(c, encArg(x1)), ENCARG(x1))
   ENCODE_F(x0, a) -> c1(F(encArg(x0), a))
   ENCODE_F(x0, b) -> c1(F(encArg(x0), b))
   ENCODE_F(x0, c) -> c1(F(encArg(x0), c))
   ENCODE_F(x0, cons_f(z0, z1)) -> c1(F(encArg(x0), f(encArg(z0), encArg(z1))))
   ENCODE_F(c, x1) -> c1(F(c, encArg(x1)))
   ENCODE_F(cons_f(z0, z1), x1) -> c1(F(f(encArg(z0), encArg(z1)), encArg(x1)))
S tuples:
   F(f(f(a, z0), z1), z2) -> c9(F(f(z0, z2), f(z1, z2)), F(z0, z2), F(z1, z2))
   F(f(b, z0), z1) -> c10
   F(c, z0) -> c11
K tuples:none
Defined Rule Symbols:   encArg_1, f_2

Defined Pair Symbols:   F_2, ENCARG_1, ENCODE_F_2

Compound Symbols:   c9_3, c10, c11, c4_3, c4_2, c4_1, c1_1


----------------------------------------

(53) CdtNarrowingProof (BOTH BOUNDS(ID, ID))
Use narrowing to replace ENCARG(cons_f(x0, cons_f(z0, z1))) -> c4(F(encArg(x0), f(encArg(z0), encArg(z1))), ENCARG(x0), ENCARG(cons_f(z0, z1))) by 
   ENCARG(cons_f(x0, cons_f(x1, a))) -> c4(F(encArg(x0), f(encArg(x1), a)), ENCARG(x0), ENCARG(cons_f(x1, a)))
   ENCARG(cons_f(x0, cons_f(x1, b))) -> c4(F(encArg(x0), f(encArg(x1), b)), ENCARG(x0), ENCARG(cons_f(x1, b)))
   ENCARG(cons_f(x0, cons_f(x1, c))) -> c4(F(encArg(x0), f(encArg(x1), c)), ENCARG(x0), ENCARG(cons_f(x1, c)))
   ENCARG(cons_f(x0, cons_f(x1, cons_f(z0, z1)))) -> c4(F(encArg(x0), f(encArg(x1), f(encArg(z0), encArg(z1)))), ENCARG(x0), ENCARG(cons_f(x1, cons_f(z0, z1))))
   ENCARG(cons_f(x0, cons_f(a, x2))) -> c4(F(encArg(x0), f(a, encArg(x2))), ENCARG(x0), ENCARG(cons_f(a, x2)))
   ENCARG(cons_f(x0, cons_f(b, x2))) -> c4(F(encArg(x0), f(b, encArg(x2))), ENCARG(x0), ENCARG(cons_f(b, x2)))
   ENCARG(cons_f(x0, cons_f(c, x2))) -> c4(F(encArg(x0), f(c, encArg(x2))), ENCARG(x0), ENCARG(cons_f(c, x2)))
   ENCARG(cons_f(x0, cons_f(cons_f(z0, z1), x2))) -> c4(F(encArg(x0), f(f(encArg(z0), encArg(z1)), encArg(x2))), ENCARG(x0), ENCARG(cons_f(cons_f(z0, z1), x2)))
   ENCARG(cons_f(a, cons_f(x1, x2))) -> c4(F(a, f(encArg(x1), encArg(x2))), ENCARG(a), ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(b, cons_f(x1, x2))) -> c4(F(b, f(encArg(x1), encArg(x2))), ENCARG(b), ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(c, cons_f(x1, x2))) -> c4(F(c, f(encArg(x1), encArg(x2))), ENCARG(c), ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(cons_f(z0, z1), cons_f(x1, x2))) -> c4(F(f(encArg(z0), encArg(z1)), f(encArg(x1), encArg(x2))), ENCARG(cons_f(z0, z1)), ENCARG(cons_f(x1, x2)))

----------------------------------------

(54)
Obligation:
Complexity Dependency Tuples Problem

Rules:
   encArg(a) -> a
   encArg(b) -> b
   encArg(c) -> c
   encArg(cons_f(z0, z1)) -> f(encArg(z0), encArg(z1))
   f(f(f(a, z0), z1), z2) -> f(f(z0, z2), f(z1, z2))
   f(f(b, z0), z1) -> z0
   f(c, z0) -> z0
Tuples:
   F(f(f(a, z0), z1), z2) -> c9(F(f(z0, z2), f(z1, z2)), F(z0, z2), F(z1, z2))
   F(f(b, z0), z1) -> c10
   F(c, z0) -> c11
   ENCARG(cons_f(cons_f(z0, z1), x1)) -> c4(F(f(encArg(z0), encArg(z1)), encArg(x1)), ENCARG(cons_f(z0, z1)), ENCARG(x1))
   ENCARG(cons_f(x0, a)) -> c4(F(encArg(x0), a), ENCARG(x0))
   ENCARG(cons_f(x0, b)) -> c4(F(encArg(x0), b), ENCARG(x0))
   ENCARG(cons_f(x0, c)) -> c4(F(encArg(x0), c), ENCARG(x0))
   ENCARG(cons_f(a, x1)) -> c4(ENCARG(x1))
   ENCARG(cons_f(b, x1)) -> c4(ENCARG(x1))
   ENCARG(cons_f(c, x1)) -> c4(F(c, encArg(x1)), ENCARG(x1))
   ENCODE_F(x0, a) -> c1(F(encArg(x0), a))
   ENCODE_F(x0, b) -> c1(F(encArg(x0), b))
   ENCODE_F(x0, c) -> c1(F(encArg(x0), c))
   ENCODE_F(x0, cons_f(z0, z1)) -> c1(F(encArg(x0), f(encArg(z0), encArg(z1))))
   ENCODE_F(c, x1) -> c1(F(c, encArg(x1)))
   ENCODE_F(cons_f(z0, z1), x1) -> c1(F(f(encArg(z0), encArg(z1)), encArg(x1)))
   ENCARG(cons_f(x0, cons_f(x1, a))) -> c4(F(encArg(x0), f(encArg(x1), a)), ENCARG(x0), ENCARG(cons_f(x1, a)))
   ENCARG(cons_f(x0, cons_f(x1, b))) -> c4(F(encArg(x0), f(encArg(x1), b)), ENCARG(x0), ENCARG(cons_f(x1, b)))
   ENCARG(cons_f(x0, cons_f(x1, c))) -> c4(F(encArg(x0), f(encArg(x1), c)), ENCARG(x0), ENCARG(cons_f(x1, c)))
   ENCARG(cons_f(x0, cons_f(x1, cons_f(z0, z1)))) -> c4(F(encArg(x0), f(encArg(x1), f(encArg(z0), encArg(z1)))), ENCARG(x0), ENCARG(cons_f(x1, cons_f(z0, z1))))
   ENCARG(cons_f(x0, cons_f(a, x2))) -> c4(F(encArg(x0), f(a, encArg(x2))), ENCARG(x0), ENCARG(cons_f(a, x2)))
   ENCARG(cons_f(x0, cons_f(b, x2))) -> c4(F(encArg(x0), f(b, encArg(x2))), ENCARG(x0), ENCARG(cons_f(b, x2)))
   ENCARG(cons_f(x0, cons_f(c, x2))) -> c4(F(encArg(x0), f(c, encArg(x2))), ENCARG(x0), ENCARG(cons_f(c, x2)))
   ENCARG(cons_f(x0, cons_f(cons_f(z0, z1), x2))) -> c4(F(encArg(x0), f(f(encArg(z0), encArg(z1)), encArg(x2))), ENCARG(x0), ENCARG(cons_f(cons_f(z0, z1), x2)))
   ENCARG(cons_f(a, cons_f(x1, x2))) -> c4(F(a, f(encArg(x1), encArg(x2))), ENCARG(a), ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(b, cons_f(x1, x2))) -> c4(F(b, f(encArg(x1), encArg(x2))), ENCARG(b), ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(c, cons_f(x1, x2))) -> c4(F(c, f(encArg(x1), encArg(x2))), ENCARG(c), ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(cons_f(z0, z1), cons_f(x1, x2))) -> c4(F(f(encArg(z0), encArg(z1)), f(encArg(x1), encArg(x2))), ENCARG(cons_f(z0, z1)), ENCARG(cons_f(x1, x2)))
S tuples:
   F(f(f(a, z0), z1), z2) -> c9(F(f(z0, z2), f(z1, z2)), F(z0, z2), F(z1, z2))
   F(f(b, z0), z1) -> c10
   F(c, z0) -> c11
K tuples:none
Defined Rule Symbols:   encArg_1, f_2

Defined Pair Symbols:   F_2, ENCARG_1, ENCODE_F_2

Compound Symbols:   c9_3, c10, c11, c4_3, c4_2, c4_1, c1_1


----------------------------------------

(55) CdtRhsSimplificationProcessorProof (BOTH BOUNDS(ID, ID))
Removed 5 trailing tuple parts
----------------------------------------

(56)
Obligation:
Complexity Dependency Tuples Problem

Rules:
   encArg(a) -> a
   encArg(b) -> b
   encArg(c) -> c
   encArg(cons_f(z0, z1)) -> f(encArg(z0), encArg(z1))
   f(f(f(a, z0), z1), z2) -> f(f(z0, z2), f(z1, z2))
   f(f(b, z0), z1) -> z0
   f(c, z0) -> z0
Tuples:
   F(f(f(a, z0), z1), z2) -> c9(F(f(z0, z2), f(z1, z2)), F(z0, z2), F(z1, z2))
   F(f(b, z0), z1) -> c10
   F(c, z0) -> c11
   ENCARG(cons_f(cons_f(z0, z1), x1)) -> c4(F(f(encArg(z0), encArg(z1)), encArg(x1)), ENCARG(cons_f(z0, z1)), ENCARG(x1))
   ENCARG(cons_f(x0, a)) -> c4(F(encArg(x0), a), ENCARG(x0))
   ENCARG(cons_f(x0, b)) -> c4(F(encArg(x0), b), ENCARG(x0))
   ENCARG(cons_f(x0, c)) -> c4(F(encArg(x0), c), ENCARG(x0))
   ENCARG(cons_f(a, x1)) -> c4(ENCARG(x1))
   ENCARG(cons_f(b, x1)) -> c4(ENCARG(x1))
   ENCARG(cons_f(c, x1)) -> c4(F(c, encArg(x1)), ENCARG(x1))
   ENCODE_F(x0, a) -> c1(F(encArg(x0), a))
   ENCODE_F(x0, b) -> c1(F(encArg(x0), b))
   ENCODE_F(x0, c) -> c1(F(encArg(x0), c))
   ENCODE_F(x0, cons_f(z0, z1)) -> c1(F(encArg(x0), f(encArg(z0), encArg(z1))))
   ENCODE_F(c, x1) -> c1(F(c, encArg(x1)))
   ENCODE_F(cons_f(z0, z1), x1) -> c1(F(f(encArg(z0), encArg(z1)), encArg(x1)))
   ENCARG(cons_f(x0, cons_f(x1, a))) -> c4(F(encArg(x0), f(encArg(x1), a)), ENCARG(x0), ENCARG(cons_f(x1, a)))
   ENCARG(cons_f(x0, cons_f(x1, b))) -> c4(F(encArg(x0), f(encArg(x1), b)), ENCARG(x0), ENCARG(cons_f(x1, b)))
   ENCARG(cons_f(x0, cons_f(x1, c))) -> c4(F(encArg(x0), f(encArg(x1), c)), ENCARG(x0), ENCARG(cons_f(x1, c)))
   ENCARG(cons_f(x0, cons_f(x1, cons_f(z0, z1)))) -> c4(F(encArg(x0), f(encArg(x1), f(encArg(z0), encArg(z1)))), ENCARG(x0), ENCARG(cons_f(x1, cons_f(z0, z1))))
   ENCARG(cons_f(x0, cons_f(a, x2))) -> c4(F(encArg(x0), f(a, encArg(x2))), ENCARG(x0), ENCARG(cons_f(a, x2)))
   ENCARG(cons_f(x0, cons_f(b, x2))) -> c4(F(encArg(x0), f(b, encArg(x2))), ENCARG(x0), ENCARG(cons_f(b, x2)))
   ENCARG(cons_f(x0, cons_f(c, x2))) -> c4(F(encArg(x0), f(c, encArg(x2))), ENCARG(x0), ENCARG(cons_f(c, x2)))
   ENCARG(cons_f(x0, cons_f(cons_f(z0, z1), x2))) -> c4(F(encArg(x0), f(f(encArg(z0), encArg(z1)), encArg(x2))), ENCARG(x0), ENCARG(cons_f(cons_f(z0, z1), x2)))
   ENCARG(cons_f(cons_f(z0, z1), cons_f(x1, x2))) -> c4(F(f(encArg(z0), encArg(z1)), f(encArg(x1), encArg(x2))), ENCARG(cons_f(z0, z1)), ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(a, cons_f(x1, x2))) -> c4(ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(b, cons_f(x1, x2))) -> c4(ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(c, cons_f(x1, x2))) -> c4(F(c, f(encArg(x1), encArg(x2))), ENCARG(cons_f(x1, x2)))
S tuples:
   F(f(f(a, z0), z1), z2) -> c9(F(f(z0, z2), f(z1, z2)), F(z0, z2), F(z1, z2))
   F(f(b, z0), z1) -> c10
   F(c, z0) -> c11
K tuples:none
Defined Rule Symbols:   encArg_1, f_2

Defined Pair Symbols:   F_2, ENCARG_1, ENCODE_F_2

Compound Symbols:   c9_3, c10, c11, c4_3, c4_2, c4_1, c1_1


----------------------------------------

(57) CdtNarrowingProof (BOTH BOUNDS(ID, ID))
Use narrowing to replace ENCARG(cons_f(cons_f(z0, z1), x1)) -> c4(F(f(encArg(z0), encArg(z1)), encArg(x1)), ENCARG(cons_f(z0, z1)), ENCARG(x1)) by 
   ENCARG(cons_f(cons_f(x0, x1), a)) -> c4(F(f(encArg(x0), encArg(x1)), a), ENCARG(cons_f(x0, x1)), ENCARG(a))
   ENCARG(cons_f(cons_f(x0, x1), b)) -> c4(F(f(encArg(x0), encArg(x1)), b), ENCARG(cons_f(x0, x1)), ENCARG(b))
   ENCARG(cons_f(cons_f(x0, x1), c)) -> c4(F(f(encArg(x0), encArg(x1)), c), ENCARG(cons_f(x0, x1)), ENCARG(c))
   ENCARG(cons_f(cons_f(x0, x1), cons_f(z0, z1))) -> c4(F(f(encArg(x0), encArg(x1)), f(encArg(z0), encArg(z1))), ENCARG(cons_f(x0, x1)), ENCARG(cons_f(z0, z1)))
   ENCARG(cons_f(cons_f(x0, a), x2)) -> c4(F(f(encArg(x0), a), encArg(x2)), ENCARG(cons_f(x0, a)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, b), x2)) -> c4(F(f(encArg(x0), b), encArg(x2)), ENCARG(cons_f(x0, b)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, c), x2)) -> c4(F(f(encArg(x0), c), encArg(x2)), ENCARG(cons_f(x0, c)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, cons_f(z0, z1)), x2)) -> c4(F(f(encArg(x0), f(encArg(z0), encArg(z1))), encArg(x2)), ENCARG(cons_f(x0, cons_f(z0, z1))), ENCARG(x2))
   ENCARG(cons_f(cons_f(a, x1), x2)) -> c4(F(f(a, encArg(x1)), encArg(x2)), ENCARG(cons_f(a, x1)), ENCARG(x2))
   ENCARG(cons_f(cons_f(b, x1), x2)) -> c4(F(f(b, encArg(x1)), encArg(x2)), ENCARG(cons_f(b, x1)), ENCARG(x2))
   ENCARG(cons_f(cons_f(c, x1), x2)) -> c4(F(f(c, encArg(x1)), encArg(x2)), ENCARG(cons_f(c, x1)), ENCARG(x2))
   ENCARG(cons_f(cons_f(cons_f(z0, z1), x1), x2)) -> c4(F(f(f(encArg(z0), encArg(z1)), encArg(x1)), encArg(x2)), ENCARG(cons_f(cons_f(z0, z1), x1)), ENCARG(x2))

----------------------------------------

(58)
Obligation:
Complexity Dependency Tuples Problem

Rules:
   encArg(a) -> a
   encArg(b) -> b
   encArg(c) -> c
   encArg(cons_f(z0, z1)) -> f(encArg(z0), encArg(z1))
   f(f(f(a, z0), z1), z2) -> f(f(z0, z2), f(z1, z2))
   f(f(b, z0), z1) -> z0
   f(c, z0) -> z0
Tuples:
   F(f(f(a, z0), z1), z2) -> c9(F(f(z0, z2), f(z1, z2)), F(z0, z2), F(z1, z2))
   F(f(b, z0), z1) -> c10
   F(c, z0) -> c11
   ENCARG(cons_f(x0, a)) -> c4(F(encArg(x0), a), ENCARG(x0))
   ENCARG(cons_f(x0, b)) -> c4(F(encArg(x0), b), ENCARG(x0))
   ENCARG(cons_f(x0, c)) -> c4(F(encArg(x0), c), ENCARG(x0))
   ENCARG(cons_f(a, x1)) -> c4(ENCARG(x1))
   ENCARG(cons_f(b, x1)) -> c4(ENCARG(x1))
   ENCARG(cons_f(c, x1)) -> c4(F(c, encArg(x1)), ENCARG(x1))
   ENCODE_F(x0, a) -> c1(F(encArg(x0), a))
   ENCODE_F(x0, b) -> c1(F(encArg(x0), b))
   ENCODE_F(x0, c) -> c1(F(encArg(x0), c))
   ENCODE_F(x0, cons_f(z0, z1)) -> c1(F(encArg(x0), f(encArg(z0), encArg(z1))))
   ENCODE_F(c, x1) -> c1(F(c, encArg(x1)))
   ENCODE_F(cons_f(z0, z1), x1) -> c1(F(f(encArg(z0), encArg(z1)), encArg(x1)))
   ENCARG(cons_f(x0, cons_f(x1, a))) -> c4(F(encArg(x0), f(encArg(x1), a)), ENCARG(x0), ENCARG(cons_f(x1, a)))
   ENCARG(cons_f(x0, cons_f(x1, b))) -> c4(F(encArg(x0), f(encArg(x1), b)), ENCARG(x0), ENCARG(cons_f(x1, b)))
   ENCARG(cons_f(x0, cons_f(x1, c))) -> c4(F(encArg(x0), f(encArg(x1), c)), ENCARG(x0), ENCARG(cons_f(x1, c)))
   ENCARG(cons_f(x0, cons_f(x1, cons_f(z0, z1)))) -> c4(F(encArg(x0), f(encArg(x1), f(encArg(z0), encArg(z1)))), ENCARG(x0), ENCARG(cons_f(x1, cons_f(z0, z1))))
   ENCARG(cons_f(x0, cons_f(a, x2))) -> c4(F(encArg(x0), f(a, encArg(x2))), ENCARG(x0), ENCARG(cons_f(a, x2)))
   ENCARG(cons_f(x0, cons_f(b, x2))) -> c4(F(encArg(x0), f(b, encArg(x2))), ENCARG(x0), ENCARG(cons_f(b, x2)))
   ENCARG(cons_f(x0, cons_f(c, x2))) -> c4(F(encArg(x0), f(c, encArg(x2))), ENCARG(x0), ENCARG(cons_f(c, x2)))
   ENCARG(cons_f(x0, cons_f(cons_f(z0, z1), x2))) -> c4(F(encArg(x0), f(f(encArg(z0), encArg(z1)), encArg(x2))), ENCARG(x0), ENCARG(cons_f(cons_f(z0, z1), x2)))
   ENCARG(cons_f(cons_f(z0, z1), cons_f(x1, x2))) -> c4(F(f(encArg(z0), encArg(z1)), f(encArg(x1), encArg(x2))), ENCARG(cons_f(z0, z1)), ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(a, cons_f(x1, x2))) -> c4(ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(b, cons_f(x1, x2))) -> c4(ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(c, cons_f(x1, x2))) -> c4(F(c, f(encArg(x1), encArg(x2))), ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(cons_f(x0, x1), a)) -> c4(F(f(encArg(x0), encArg(x1)), a), ENCARG(cons_f(x0, x1)), ENCARG(a))
   ENCARG(cons_f(cons_f(x0, x1), b)) -> c4(F(f(encArg(x0), encArg(x1)), b), ENCARG(cons_f(x0, x1)), ENCARG(b))
   ENCARG(cons_f(cons_f(x0, x1), c)) -> c4(F(f(encArg(x0), encArg(x1)), c), ENCARG(cons_f(x0, x1)), ENCARG(c))
   ENCARG(cons_f(cons_f(x0, a), x2)) -> c4(F(f(encArg(x0), a), encArg(x2)), ENCARG(cons_f(x0, a)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, b), x2)) -> c4(F(f(encArg(x0), b), encArg(x2)), ENCARG(cons_f(x0, b)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, c), x2)) -> c4(F(f(encArg(x0), c), encArg(x2)), ENCARG(cons_f(x0, c)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, cons_f(z0, z1)), x2)) -> c4(F(f(encArg(x0), f(encArg(z0), encArg(z1))), encArg(x2)), ENCARG(cons_f(x0, cons_f(z0, z1))), ENCARG(x2))
   ENCARG(cons_f(cons_f(a, x1), x2)) -> c4(F(f(a, encArg(x1)), encArg(x2)), ENCARG(cons_f(a, x1)), ENCARG(x2))
   ENCARG(cons_f(cons_f(b, x1), x2)) -> c4(F(f(b, encArg(x1)), encArg(x2)), ENCARG(cons_f(b, x1)), ENCARG(x2))
   ENCARG(cons_f(cons_f(c, x1), x2)) -> c4(F(f(c, encArg(x1)), encArg(x2)), ENCARG(cons_f(c, x1)), ENCARG(x2))
   ENCARG(cons_f(cons_f(cons_f(z0, z1), x1), x2)) -> c4(F(f(f(encArg(z0), encArg(z1)), encArg(x1)), encArg(x2)), ENCARG(cons_f(cons_f(z0, z1), x1)), ENCARG(x2))
S tuples:
   F(f(f(a, z0), z1), z2) -> c9(F(f(z0, z2), f(z1, z2)), F(z0, z2), F(z1, z2))
   F(f(b, z0), z1) -> c10
   F(c, z0) -> c11
K tuples:none
Defined Rule Symbols:   encArg_1, f_2

Defined Pair Symbols:   F_2, ENCARG_1, ENCODE_F_2

Compound Symbols:   c9_3, c10, c11, c4_2, c4_1, c1_1, c4_3


----------------------------------------

(59) CdtRhsSimplificationProcessorProof (BOTH BOUNDS(ID, ID))
Removed 4 trailing tuple parts
----------------------------------------

(60)
Obligation:
Complexity Dependency Tuples Problem

Rules:
   encArg(a) -> a
   encArg(b) -> b
   encArg(c) -> c
   encArg(cons_f(z0, z1)) -> f(encArg(z0), encArg(z1))
   f(f(f(a, z0), z1), z2) -> f(f(z0, z2), f(z1, z2))
   f(f(b, z0), z1) -> z0
   f(c, z0) -> z0
Tuples:
   F(f(f(a, z0), z1), z2) -> c9(F(f(z0, z2), f(z1, z2)), F(z0, z2), F(z1, z2))
   F(f(b, z0), z1) -> c10
   F(c, z0) -> c11
   ENCARG(cons_f(x0, a)) -> c4(F(encArg(x0), a), ENCARG(x0))
   ENCARG(cons_f(x0, b)) -> c4(F(encArg(x0), b), ENCARG(x0))
   ENCARG(cons_f(x0, c)) -> c4(F(encArg(x0), c), ENCARG(x0))
   ENCARG(cons_f(a, x1)) -> c4(ENCARG(x1))
   ENCARG(cons_f(b, x1)) -> c4(ENCARG(x1))
   ENCARG(cons_f(c, x1)) -> c4(F(c, encArg(x1)), ENCARG(x1))
   ENCODE_F(x0, a) -> c1(F(encArg(x0), a))
   ENCODE_F(x0, b) -> c1(F(encArg(x0), b))
   ENCODE_F(x0, c) -> c1(F(encArg(x0), c))
   ENCODE_F(x0, cons_f(z0, z1)) -> c1(F(encArg(x0), f(encArg(z0), encArg(z1))))
   ENCODE_F(c, x1) -> c1(F(c, encArg(x1)))
   ENCODE_F(cons_f(z0, z1), x1) -> c1(F(f(encArg(z0), encArg(z1)), encArg(x1)))
   ENCARG(cons_f(x0, cons_f(x1, a))) -> c4(F(encArg(x0), f(encArg(x1), a)), ENCARG(x0), ENCARG(cons_f(x1, a)))
   ENCARG(cons_f(x0, cons_f(x1, b))) -> c4(F(encArg(x0), f(encArg(x1), b)), ENCARG(x0), ENCARG(cons_f(x1, b)))
   ENCARG(cons_f(x0, cons_f(x1, c))) -> c4(F(encArg(x0), f(encArg(x1), c)), ENCARG(x0), ENCARG(cons_f(x1, c)))
   ENCARG(cons_f(x0, cons_f(x1, cons_f(z0, z1)))) -> c4(F(encArg(x0), f(encArg(x1), f(encArg(z0), encArg(z1)))), ENCARG(x0), ENCARG(cons_f(x1, cons_f(z0, z1))))
   ENCARG(cons_f(x0, cons_f(a, x2))) -> c4(F(encArg(x0), f(a, encArg(x2))), ENCARG(x0), ENCARG(cons_f(a, x2)))
   ENCARG(cons_f(x0, cons_f(b, x2))) -> c4(F(encArg(x0), f(b, encArg(x2))), ENCARG(x0), ENCARG(cons_f(b, x2)))
   ENCARG(cons_f(x0, cons_f(c, x2))) -> c4(F(encArg(x0), f(c, encArg(x2))), ENCARG(x0), ENCARG(cons_f(c, x2)))
   ENCARG(cons_f(x0, cons_f(cons_f(z0, z1), x2))) -> c4(F(encArg(x0), f(f(encArg(z0), encArg(z1)), encArg(x2))), ENCARG(x0), ENCARG(cons_f(cons_f(z0, z1), x2)))
   ENCARG(cons_f(cons_f(z0, z1), cons_f(x1, x2))) -> c4(F(f(encArg(z0), encArg(z1)), f(encArg(x1), encArg(x2))), ENCARG(cons_f(z0, z1)), ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(a, cons_f(x1, x2))) -> c4(ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(b, cons_f(x1, x2))) -> c4(ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(c, cons_f(x1, x2))) -> c4(F(c, f(encArg(x1), encArg(x2))), ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(cons_f(x0, a), x2)) -> c4(F(f(encArg(x0), a), encArg(x2)), ENCARG(cons_f(x0, a)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, b), x2)) -> c4(F(f(encArg(x0), b), encArg(x2)), ENCARG(cons_f(x0, b)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, c), x2)) -> c4(F(f(encArg(x0), c), encArg(x2)), ENCARG(cons_f(x0, c)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, cons_f(z0, z1)), x2)) -> c4(F(f(encArg(x0), f(encArg(z0), encArg(z1))), encArg(x2)), ENCARG(cons_f(x0, cons_f(z0, z1))), ENCARG(x2))
   ENCARG(cons_f(cons_f(b, x1), x2)) -> c4(F(f(b, encArg(x1)), encArg(x2)), ENCARG(cons_f(b, x1)), ENCARG(x2))
   ENCARG(cons_f(cons_f(c, x1), x2)) -> c4(F(f(c, encArg(x1)), encArg(x2)), ENCARG(cons_f(c, x1)), ENCARG(x2))
   ENCARG(cons_f(cons_f(cons_f(z0, z1), x1), x2)) -> c4(F(f(f(encArg(z0), encArg(z1)), encArg(x1)), encArg(x2)), ENCARG(cons_f(cons_f(z0, z1), x1)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, x1), a)) -> c4(F(f(encArg(x0), encArg(x1)), a), ENCARG(cons_f(x0, x1)))
   ENCARG(cons_f(cons_f(x0, x1), b)) -> c4(F(f(encArg(x0), encArg(x1)), b), ENCARG(cons_f(x0, x1)))
   ENCARG(cons_f(cons_f(x0, x1), c)) -> c4(F(f(encArg(x0), encArg(x1)), c), ENCARG(cons_f(x0, x1)))
   ENCARG(cons_f(cons_f(a, x1), x2)) -> c4(ENCARG(cons_f(a, x1)), ENCARG(x2))
S tuples:
   F(f(f(a, z0), z1), z2) -> c9(F(f(z0, z2), f(z1, z2)), F(z0, z2), F(z1, z2))
   F(f(b, z0), z1) -> c10
   F(c, z0) -> c11
K tuples:none
Defined Rule Symbols:   encArg_1, f_2

Defined Pair Symbols:   F_2, ENCARG_1, ENCODE_F_2

Compound Symbols:   c9_3, c10, c11, c4_2, c4_1, c1_1, c4_3


----------------------------------------

(61) CdtNarrowingProof (BOTH BOUNDS(ID, ID))
Use narrowing to replace ENCARG(cons_f(x0, a)) -> c4(F(encArg(x0), a), ENCARG(x0)) by 
   ENCARG(cons_f(a, a)) -> c4(F(a, a), ENCARG(a))
   ENCARG(cons_f(b, a)) -> c4(F(b, a), ENCARG(b))
   ENCARG(cons_f(c, a)) -> c4(F(c, a), ENCARG(c))
   ENCARG(cons_f(cons_f(z0, z1), a)) -> c4(F(f(encArg(z0), encArg(z1)), a), ENCARG(cons_f(z0, z1)))

----------------------------------------

(62)
Obligation:
Complexity Dependency Tuples Problem

Rules:
   encArg(a) -> a
   encArg(b) -> b
   encArg(c) -> c
   encArg(cons_f(z0, z1)) -> f(encArg(z0), encArg(z1))
   f(f(f(a, z0), z1), z2) -> f(f(z0, z2), f(z1, z2))
   f(f(b, z0), z1) -> z0
   f(c, z0) -> z0
Tuples:
   F(f(f(a, z0), z1), z2) -> c9(F(f(z0, z2), f(z1, z2)), F(z0, z2), F(z1, z2))
   F(f(b, z0), z1) -> c10
   F(c, z0) -> c11
   ENCARG(cons_f(x0, b)) -> c4(F(encArg(x0), b), ENCARG(x0))
   ENCARG(cons_f(x0, c)) -> c4(F(encArg(x0), c), ENCARG(x0))
   ENCARG(cons_f(a, x1)) -> c4(ENCARG(x1))
   ENCARG(cons_f(b, x1)) -> c4(ENCARG(x1))
   ENCARG(cons_f(c, x1)) -> c4(F(c, encArg(x1)), ENCARG(x1))
   ENCODE_F(x0, a) -> c1(F(encArg(x0), a))
   ENCODE_F(x0, b) -> c1(F(encArg(x0), b))
   ENCODE_F(x0, c) -> c1(F(encArg(x0), c))
   ENCODE_F(x0, cons_f(z0, z1)) -> c1(F(encArg(x0), f(encArg(z0), encArg(z1))))
   ENCODE_F(c, x1) -> c1(F(c, encArg(x1)))
   ENCODE_F(cons_f(z0, z1), x1) -> c1(F(f(encArg(z0), encArg(z1)), encArg(x1)))
   ENCARG(cons_f(x0, cons_f(x1, a))) -> c4(F(encArg(x0), f(encArg(x1), a)), ENCARG(x0), ENCARG(cons_f(x1, a)))
   ENCARG(cons_f(x0, cons_f(x1, b))) -> c4(F(encArg(x0), f(encArg(x1), b)), ENCARG(x0), ENCARG(cons_f(x1, b)))
   ENCARG(cons_f(x0, cons_f(x1, c))) -> c4(F(encArg(x0), f(encArg(x1), c)), ENCARG(x0), ENCARG(cons_f(x1, c)))
   ENCARG(cons_f(x0, cons_f(x1, cons_f(z0, z1)))) -> c4(F(encArg(x0), f(encArg(x1), f(encArg(z0), encArg(z1)))), ENCARG(x0), ENCARG(cons_f(x1, cons_f(z0, z1))))
   ENCARG(cons_f(x0, cons_f(a, x2))) -> c4(F(encArg(x0), f(a, encArg(x2))), ENCARG(x0), ENCARG(cons_f(a, x2)))
   ENCARG(cons_f(x0, cons_f(b, x2))) -> c4(F(encArg(x0), f(b, encArg(x2))), ENCARG(x0), ENCARG(cons_f(b, x2)))
   ENCARG(cons_f(x0, cons_f(c, x2))) -> c4(F(encArg(x0), f(c, encArg(x2))), ENCARG(x0), ENCARG(cons_f(c, x2)))
   ENCARG(cons_f(x0, cons_f(cons_f(z0, z1), x2))) -> c4(F(encArg(x0), f(f(encArg(z0), encArg(z1)), encArg(x2))), ENCARG(x0), ENCARG(cons_f(cons_f(z0, z1), x2)))
   ENCARG(cons_f(cons_f(z0, z1), cons_f(x1, x2))) -> c4(F(f(encArg(z0), encArg(z1)), f(encArg(x1), encArg(x2))), ENCARG(cons_f(z0, z1)), ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(a, cons_f(x1, x2))) -> c4(ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(b, cons_f(x1, x2))) -> c4(ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(c, cons_f(x1, x2))) -> c4(F(c, f(encArg(x1), encArg(x2))), ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(cons_f(x0, a), x2)) -> c4(F(f(encArg(x0), a), encArg(x2)), ENCARG(cons_f(x0, a)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, b), x2)) -> c4(F(f(encArg(x0), b), encArg(x2)), ENCARG(cons_f(x0, b)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, c), x2)) -> c4(F(f(encArg(x0), c), encArg(x2)), ENCARG(cons_f(x0, c)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, cons_f(z0, z1)), x2)) -> c4(F(f(encArg(x0), f(encArg(z0), encArg(z1))), encArg(x2)), ENCARG(cons_f(x0, cons_f(z0, z1))), ENCARG(x2))
   ENCARG(cons_f(cons_f(b, x1), x2)) -> c4(F(f(b, encArg(x1)), encArg(x2)), ENCARG(cons_f(b, x1)), ENCARG(x2))
   ENCARG(cons_f(cons_f(c, x1), x2)) -> c4(F(f(c, encArg(x1)), encArg(x2)), ENCARG(cons_f(c, x1)), ENCARG(x2))
   ENCARG(cons_f(cons_f(cons_f(z0, z1), x1), x2)) -> c4(F(f(f(encArg(z0), encArg(z1)), encArg(x1)), encArg(x2)), ENCARG(cons_f(cons_f(z0, z1), x1)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, x1), a)) -> c4(F(f(encArg(x0), encArg(x1)), a), ENCARG(cons_f(x0, x1)))
   ENCARG(cons_f(cons_f(x0, x1), b)) -> c4(F(f(encArg(x0), encArg(x1)), b), ENCARG(cons_f(x0, x1)))
   ENCARG(cons_f(cons_f(x0, x1), c)) -> c4(F(f(encArg(x0), encArg(x1)), c), ENCARG(cons_f(x0, x1)))
   ENCARG(cons_f(cons_f(a, x1), x2)) -> c4(ENCARG(cons_f(a, x1)), ENCARG(x2))
   ENCARG(cons_f(a, a)) -> c4(F(a, a), ENCARG(a))
   ENCARG(cons_f(b, a)) -> c4(F(b, a), ENCARG(b))
   ENCARG(cons_f(c, a)) -> c4(F(c, a), ENCARG(c))
S tuples:
   F(f(f(a, z0), z1), z2) -> c9(F(f(z0, z2), f(z1, z2)), F(z0, z2), F(z1, z2))
   F(f(b, z0), z1) -> c10
   F(c, z0) -> c11
K tuples:none
Defined Rule Symbols:   encArg_1, f_2

Defined Pair Symbols:   F_2, ENCARG_1, ENCODE_F_2

Compound Symbols:   c9_3, c10, c11, c4_2, c4_1, c1_1, c4_3


----------------------------------------

(63) CdtLeafRemovalProof (BOTH BOUNDS(ID, ID))
Removed 2 trailing nodes:
   ENCARG(cons_f(a, a)) -> c4(F(a, a), ENCARG(a))
   ENCARG(cons_f(b, a)) -> c4(F(b, a), ENCARG(b))

----------------------------------------

(64)
Obligation:
Complexity Dependency Tuples Problem

Rules:
   encArg(a) -> a
   encArg(b) -> b
   encArg(c) -> c
   encArg(cons_f(z0, z1)) -> f(encArg(z0), encArg(z1))
   f(f(f(a, z0), z1), z2) -> f(f(z0, z2), f(z1, z2))
   f(f(b, z0), z1) -> z0
   f(c, z0) -> z0
Tuples:
   F(f(f(a, z0), z1), z2) -> c9(F(f(z0, z2), f(z1, z2)), F(z0, z2), F(z1, z2))
   F(f(b, z0), z1) -> c10
   F(c, z0) -> c11
   ENCARG(cons_f(x0, b)) -> c4(F(encArg(x0), b), ENCARG(x0))
   ENCARG(cons_f(x0, c)) -> c4(F(encArg(x0), c), ENCARG(x0))
   ENCARG(cons_f(a, x1)) -> c4(ENCARG(x1))
   ENCARG(cons_f(b, x1)) -> c4(ENCARG(x1))
   ENCARG(cons_f(c, x1)) -> c4(F(c, encArg(x1)), ENCARG(x1))
   ENCODE_F(x0, a) -> c1(F(encArg(x0), a))
   ENCODE_F(x0, b) -> c1(F(encArg(x0), b))
   ENCODE_F(x0, c) -> c1(F(encArg(x0), c))
   ENCODE_F(x0, cons_f(z0, z1)) -> c1(F(encArg(x0), f(encArg(z0), encArg(z1))))
   ENCODE_F(c, x1) -> c1(F(c, encArg(x1)))
   ENCODE_F(cons_f(z0, z1), x1) -> c1(F(f(encArg(z0), encArg(z1)), encArg(x1)))
   ENCARG(cons_f(x0, cons_f(x1, a))) -> c4(F(encArg(x0), f(encArg(x1), a)), ENCARG(x0), ENCARG(cons_f(x1, a)))
   ENCARG(cons_f(x0, cons_f(x1, b))) -> c4(F(encArg(x0), f(encArg(x1), b)), ENCARG(x0), ENCARG(cons_f(x1, b)))
   ENCARG(cons_f(x0, cons_f(x1, c))) -> c4(F(encArg(x0), f(encArg(x1), c)), ENCARG(x0), ENCARG(cons_f(x1, c)))
   ENCARG(cons_f(x0, cons_f(x1, cons_f(z0, z1)))) -> c4(F(encArg(x0), f(encArg(x1), f(encArg(z0), encArg(z1)))), ENCARG(x0), ENCARG(cons_f(x1, cons_f(z0, z1))))
   ENCARG(cons_f(x0, cons_f(a, x2))) -> c4(F(encArg(x0), f(a, encArg(x2))), ENCARG(x0), ENCARG(cons_f(a, x2)))
   ENCARG(cons_f(x0, cons_f(b, x2))) -> c4(F(encArg(x0), f(b, encArg(x2))), ENCARG(x0), ENCARG(cons_f(b, x2)))
   ENCARG(cons_f(x0, cons_f(c, x2))) -> c4(F(encArg(x0), f(c, encArg(x2))), ENCARG(x0), ENCARG(cons_f(c, x2)))
   ENCARG(cons_f(x0, cons_f(cons_f(z0, z1), x2))) -> c4(F(encArg(x0), f(f(encArg(z0), encArg(z1)), encArg(x2))), ENCARG(x0), ENCARG(cons_f(cons_f(z0, z1), x2)))
   ENCARG(cons_f(cons_f(z0, z1), cons_f(x1, x2))) -> c4(F(f(encArg(z0), encArg(z1)), f(encArg(x1), encArg(x2))), ENCARG(cons_f(z0, z1)), ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(a, cons_f(x1, x2))) -> c4(ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(b, cons_f(x1, x2))) -> c4(ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(c, cons_f(x1, x2))) -> c4(F(c, f(encArg(x1), encArg(x2))), ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(cons_f(x0, a), x2)) -> c4(F(f(encArg(x0), a), encArg(x2)), ENCARG(cons_f(x0, a)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, b), x2)) -> c4(F(f(encArg(x0), b), encArg(x2)), ENCARG(cons_f(x0, b)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, c), x2)) -> c4(F(f(encArg(x0), c), encArg(x2)), ENCARG(cons_f(x0, c)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, cons_f(z0, z1)), x2)) -> c4(F(f(encArg(x0), f(encArg(z0), encArg(z1))), encArg(x2)), ENCARG(cons_f(x0, cons_f(z0, z1))), ENCARG(x2))
   ENCARG(cons_f(cons_f(b, x1), x2)) -> c4(F(f(b, encArg(x1)), encArg(x2)), ENCARG(cons_f(b, x1)), ENCARG(x2))
   ENCARG(cons_f(cons_f(c, x1), x2)) -> c4(F(f(c, encArg(x1)), encArg(x2)), ENCARG(cons_f(c, x1)), ENCARG(x2))
   ENCARG(cons_f(cons_f(cons_f(z0, z1), x1), x2)) -> c4(F(f(f(encArg(z0), encArg(z1)), encArg(x1)), encArg(x2)), ENCARG(cons_f(cons_f(z0, z1), x1)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, x1), a)) -> c4(F(f(encArg(x0), encArg(x1)), a), ENCARG(cons_f(x0, x1)))
   ENCARG(cons_f(cons_f(x0, x1), b)) -> c4(F(f(encArg(x0), encArg(x1)), b), ENCARG(cons_f(x0, x1)))
   ENCARG(cons_f(cons_f(x0, x1), c)) -> c4(F(f(encArg(x0), encArg(x1)), c), ENCARG(cons_f(x0, x1)))
   ENCARG(cons_f(cons_f(a, x1), x2)) -> c4(ENCARG(cons_f(a, x1)), ENCARG(x2))
   ENCARG(cons_f(c, a)) -> c4(F(c, a), ENCARG(c))
S tuples:
   F(f(f(a, z0), z1), z2) -> c9(F(f(z0, z2), f(z1, z2)), F(z0, z2), F(z1, z2))
   F(f(b, z0), z1) -> c10
   F(c, z0) -> c11
K tuples:none
Defined Rule Symbols:   encArg_1, f_2

Defined Pair Symbols:   F_2, ENCARG_1, ENCODE_F_2

Compound Symbols:   c9_3, c10, c11, c4_2, c4_1, c1_1, c4_3


----------------------------------------

(65) CdtRhsSimplificationProcessorProof (BOTH BOUNDS(ID, ID))
Removed 1 trailing tuple parts
----------------------------------------

(66)
Obligation:
Complexity Dependency Tuples Problem

Rules:
   encArg(a) -> a
   encArg(b) -> b
   encArg(c) -> c
   encArg(cons_f(z0, z1)) -> f(encArg(z0), encArg(z1))
   f(f(f(a, z0), z1), z2) -> f(f(z0, z2), f(z1, z2))
   f(f(b, z0), z1) -> z0
   f(c, z0) -> z0
Tuples:
   F(f(f(a, z0), z1), z2) -> c9(F(f(z0, z2), f(z1, z2)), F(z0, z2), F(z1, z2))
   F(f(b, z0), z1) -> c10
   F(c, z0) -> c11
   ENCARG(cons_f(x0, b)) -> c4(F(encArg(x0), b), ENCARG(x0))
   ENCARG(cons_f(x0, c)) -> c4(F(encArg(x0), c), ENCARG(x0))
   ENCARG(cons_f(a, x1)) -> c4(ENCARG(x1))
   ENCARG(cons_f(b, x1)) -> c4(ENCARG(x1))
   ENCARG(cons_f(c, x1)) -> c4(F(c, encArg(x1)), ENCARG(x1))
   ENCODE_F(x0, a) -> c1(F(encArg(x0), a))
   ENCODE_F(x0, b) -> c1(F(encArg(x0), b))
   ENCODE_F(x0, c) -> c1(F(encArg(x0), c))
   ENCODE_F(x0, cons_f(z0, z1)) -> c1(F(encArg(x0), f(encArg(z0), encArg(z1))))
   ENCODE_F(c, x1) -> c1(F(c, encArg(x1)))
   ENCODE_F(cons_f(z0, z1), x1) -> c1(F(f(encArg(z0), encArg(z1)), encArg(x1)))
   ENCARG(cons_f(x0, cons_f(x1, a))) -> c4(F(encArg(x0), f(encArg(x1), a)), ENCARG(x0), ENCARG(cons_f(x1, a)))
   ENCARG(cons_f(x0, cons_f(x1, b))) -> c4(F(encArg(x0), f(encArg(x1), b)), ENCARG(x0), ENCARG(cons_f(x1, b)))
   ENCARG(cons_f(x0, cons_f(x1, c))) -> c4(F(encArg(x0), f(encArg(x1), c)), ENCARG(x0), ENCARG(cons_f(x1, c)))
   ENCARG(cons_f(x0, cons_f(x1, cons_f(z0, z1)))) -> c4(F(encArg(x0), f(encArg(x1), f(encArg(z0), encArg(z1)))), ENCARG(x0), ENCARG(cons_f(x1, cons_f(z0, z1))))
   ENCARG(cons_f(x0, cons_f(a, x2))) -> c4(F(encArg(x0), f(a, encArg(x2))), ENCARG(x0), ENCARG(cons_f(a, x2)))
   ENCARG(cons_f(x0, cons_f(b, x2))) -> c4(F(encArg(x0), f(b, encArg(x2))), ENCARG(x0), ENCARG(cons_f(b, x2)))
   ENCARG(cons_f(x0, cons_f(c, x2))) -> c4(F(encArg(x0), f(c, encArg(x2))), ENCARG(x0), ENCARG(cons_f(c, x2)))
   ENCARG(cons_f(x0, cons_f(cons_f(z0, z1), x2))) -> c4(F(encArg(x0), f(f(encArg(z0), encArg(z1)), encArg(x2))), ENCARG(x0), ENCARG(cons_f(cons_f(z0, z1), x2)))
   ENCARG(cons_f(cons_f(z0, z1), cons_f(x1, x2))) -> c4(F(f(encArg(z0), encArg(z1)), f(encArg(x1), encArg(x2))), ENCARG(cons_f(z0, z1)), ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(a, cons_f(x1, x2))) -> c4(ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(b, cons_f(x1, x2))) -> c4(ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(c, cons_f(x1, x2))) -> c4(F(c, f(encArg(x1), encArg(x2))), ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(cons_f(x0, a), x2)) -> c4(F(f(encArg(x0), a), encArg(x2)), ENCARG(cons_f(x0, a)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, b), x2)) -> c4(F(f(encArg(x0), b), encArg(x2)), ENCARG(cons_f(x0, b)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, c), x2)) -> c4(F(f(encArg(x0), c), encArg(x2)), ENCARG(cons_f(x0, c)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, cons_f(z0, z1)), x2)) -> c4(F(f(encArg(x0), f(encArg(z0), encArg(z1))), encArg(x2)), ENCARG(cons_f(x0, cons_f(z0, z1))), ENCARG(x2))
   ENCARG(cons_f(cons_f(b, x1), x2)) -> c4(F(f(b, encArg(x1)), encArg(x2)), ENCARG(cons_f(b, x1)), ENCARG(x2))
   ENCARG(cons_f(cons_f(c, x1), x2)) -> c4(F(f(c, encArg(x1)), encArg(x2)), ENCARG(cons_f(c, x1)), ENCARG(x2))
   ENCARG(cons_f(cons_f(cons_f(z0, z1), x1), x2)) -> c4(F(f(f(encArg(z0), encArg(z1)), encArg(x1)), encArg(x2)), ENCARG(cons_f(cons_f(z0, z1), x1)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, x1), a)) -> c4(F(f(encArg(x0), encArg(x1)), a), ENCARG(cons_f(x0, x1)))
   ENCARG(cons_f(cons_f(x0, x1), b)) -> c4(F(f(encArg(x0), encArg(x1)), b), ENCARG(cons_f(x0, x1)))
   ENCARG(cons_f(cons_f(x0, x1), c)) -> c4(F(f(encArg(x0), encArg(x1)), c), ENCARG(cons_f(x0, x1)))
   ENCARG(cons_f(cons_f(a, x1), x2)) -> c4(ENCARG(cons_f(a, x1)), ENCARG(x2))
   ENCARG(cons_f(c, a)) -> c4(F(c, a))
S tuples:
   F(f(f(a, z0), z1), z2) -> c9(F(f(z0, z2), f(z1, z2)), F(z0, z2), F(z1, z2))
   F(f(b, z0), z1) -> c10
   F(c, z0) -> c11
K tuples:none
Defined Rule Symbols:   encArg_1, f_2

Defined Pair Symbols:   F_2, ENCARG_1, ENCODE_F_2

Compound Symbols:   c9_3, c10, c11, c4_2, c4_1, c1_1, c4_3


----------------------------------------

(67) CdtNarrowingProof (BOTH BOUNDS(ID, ID))
Use narrowing to replace ENCARG(cons_f(x0, b)) -> c4(F(encArg(x0), b), ENCARG(x0)) by 
   ENCARG(cons_f(a, b)) -> c4(F(a, b), ENCARG(a))
   ENCARG(cons_f(b, b)) -> c4(F(b, b), ENCARG(b))
   ENCARG(cons_f(c, b)) -> c4(F(c, b), ENCARG(c))
   ENCARG(cons_f(cons_f(z0, z1), b)) -> c4(F(f(encArg(z0), encArg(z1)), b), ENCARG(cons_f(z0, z1)))

----------------------------------------

(68)
Obligation:
Complexity Dependency Tuples Problem

Rules:
   encArg(a) -> a
   encArg(b) -> b
   encArg(c) -> c
   encArg(cons_f(z0, z1)) -> f(encArg(z0), encArg(z1))
   f(f(f(a, z0), z1), z2) -> f(f(z0, z2), f(z1, z2))
   f(f(b, z0), z1) -> z0
   f(c, z0) -> z0
Tuples:
   F(f(f(a, z0), z1), z2) -> c9(F(f(z0, z2), f(z1, z2)), F(z0, z2), F(z1, z2))
   F(f(b, z0), z1) -> c10
   F(c, z0) -> c11
   ENCARG(cons_f(x0, c)) -> c4(F(encArg(x0), c), ENCARG(x0))
   ENCARG(cons_f(a, x1)) -> c4(ENCARG(x1))
   ENCARG(cons_f(b, x1)) -> c4(ENCARG(x1))
   ENCARG(cons_f(c, x1)) -> c4(F(c, encArg(x1)), ENCARG(x1))
   ENCODE_F(x0, a) -> c1(F(encArg(x0), a))
   ENCODE_F(x0, b) -> c1(F(encArg(x0), b))
   ENCODE_F(x0, c) -> c1(F(encArg(x0), c))
   ENCODE_F(x0, cons_f(z0, z1)) -> c1(F(encArg(x0), f(encArg(z0), encArg(z1))))
   ENCODE_F(c, x1) -> c1(F(c, encArg(x1)))
   ENCODE_F(cons_f(z0, z1), x1) -> c1(F(f(encArg(z0), encArg(z1)), encArg(x1)))
   ENCARG(cons_f(x0, cons_f(x1, a))) -> c4(F(encArg(x0), f(encArg(x1), a)), ENCARG(x0), ENCARG(cons_f(x1, a)))
   ENCARG(cons_f(x0, cons_f(x1, b))) -> c4(F(encArg(x0), f(encArg(x1), b)), ENCARG(x0), ENCARG(cons_f(x1, b)))
   ENCARG(cons_f(x0, cons_f(x1, c))) -> c4(F(encArg(x0), f(encArg(x1), c)), ENCARG(x0), ENCARG(cons_f(x1, c)))
   ENCARG(cons_f(x0, cons_f(x1, cons_f(z0, z1)))) -> c4(F(encArg(x0), f(encArg(x1), f(encArg(z0), encArg(z1)))), ENCARG(x0), ENCARG(cons_f(x1, cons_f(z0, z1))))
   ENCARG(cons_f(x0, cons_f(a, x2))) -> c4(F(encArg(x0), f(a, encArg(x2))), ENCARG(x0), ENCARG(cons_f(a, x2)))
   ENCARG(cons_f(x0, cons_f(b, x2))) -> c4(F(encArg(x0), f(b, encArg(x2))), ENCARG(x0), ENCARG(cons_f(b, x2)))
   ENCARG(cons_f(x0, cons_f(c, x2))) -> c4(F(encArg(x0), f(c, encArg(x2))), ENCARG(x0), ENCARG(cons_f(c, x2)))
   ENCARG(cons_f(x0, cons_f(cons_f(z0, z1), x2))) -> c4(F(encArg(x0), f(f(encArg(z0), encArg(z1)), encArg(x2))), ENCARG(x0), ENCARG(cons_f(cons_f(z0, z1), x2)))
   ENCARG(cons_f(cons_f(z0, z1), cons_f(x1, x2))) -> c4(F(f(encArg(z0), encArg(z1)), f(encArg(x1), encArg(x2))), ENCARG(cons_f(z0, z1)), ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(a, cons_f(x1, x2))) -> c4(ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(b, cons_f(x1, x2))) -> c4(ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(c, cons_f(x1, x2))) -> c4(F(c, f(encArg(x1), encArg(x2))), ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(cons_f(x0, a), x2)) -> c4(F(f(encArg(x0), a), encArg(x2)), ENCARG(cons_f(x0, a)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, b), x2)) -> c4(F(f(encArg(x0), b), encArg(x2)), ENCARG(cons_f(x0, b)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, c), x2)) -> c4(F(f(encArg(x0), c), encArg(x2)), ENCARG(cons_f(x0, c)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, cons_f(z0, z1)), x2)) -> c4(F(f(encArg(x0), f(encArg(z0), encArg(z1))), encArg(x2)), ENCARG(cons_f(x0, cons_f(z0, z1))), ENCARG(x2))
   ENCARG(cons_f(cons_f(b, x1), x2)) -> c4(F(f(b, encArg(x1)), encArg(x2)), ENCARG(cons_f(b, x1)), ENCARG(x2))
   ENCARG(cons_f(cons_f(c, x1), x2)) -> c4(F(f(c, encArg(x1)), encArg(x2)), ENCARG(cons_f(c, x1)), ENCARG(x2))
   ENCARG(cons_f(cons_f(cons_f(z0, z1), x1), x2)) -> c4(F(f(f(encArg(z0), encArg(z1)), encArg(x1)), encArg(x2)), ENCARG(cons_f(cons_f(z0, z1), x1)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, x1), a)) -> c4(F(f(encArg(x0), encArg(x1)), a), ENCARG(cons_f(x0, x1)))
   ENCARG(cons_f(cons_f(x0, x1), b)) -> c4(F(f(encArg(x0), encArg(x1)), b), ENCARG(cons_f(x0, x1)))
   ENCARG(cons_f(cons_f(x0, x1), c)) -> c4(F(f(encArg(x0), encArg(x1)), c), ENCARG(cons_f(x0, x1)))
   ENCARG(cons_f(cons_f(a, x1), x2)) -> c4(ENCARG(cons_f(a, x1)), ENCARG(x2))
   ENCARG(cons_f(c, a)) -> c4(F(c, a))
   ENCARG(cons_f(a, b)) -> c4(F(a, b), ENCARG(a))
   ENCARG(cons_f(b, b)) -> c4(F(b, b), ENCARG(b))
   ENCARG(cons_f(c, b)) -> c4(F(c, b), ENCARG(c))
S tuples:
   F(f(f(a, z0), z1), z2) -> c9(F(f(z0, z2), f(z1, z2)), F(z0, z2), F(z1, z2))
   F(f(b, z0), z1) -> c10
   F(c, z0) -> c11
K tuples:none
Defined Rule Symbols:   encArg_1, f_2

Defined Pair Symbols:   F_2, ENCARG_1, ENCODE_F_2

Compound Symbols:   c9_3, c10, c11, c4_2, c4_1, c1_1, c4_3


----------------------------------------

(69) CdtLeafRemovalProof (BOTH BOUNDS(ID, ID))
Removed 2 trailing nodes:
   ENCARG(cons_f(b, b)) -> c4(F(b, b), ENCARG(b))
   ENCARG(cons_f(a, b)) -> c4(F(a, b), ENCARG(a))

----------------------------------------

(70)
Obligation:
Complexity Dependency Tuples Problem

Rules:
   encArg(a) -> a
   encArg(b) -> b
   encArg(c) -> c
   encArg(cons_f(z0, z1)) -> f(encArg(z0), encArg(z1))
   f(f(f(a, z0), z1), z2) -> f(f(z0, z2), f(z1, z2))
   f(f(b, z0), z1) -> z0
   f(c, z0) -> z0
Tuples:
   F(f(f(a, z0), z1), z2) -> c9(F(f(z0, z2), f(z1, z2)), F(z0, z2), F(z1, z2))
   F(f(b, z0), z1) -> c10
   F(c, z0) -> c11
   ENCARG(cons_f(x0, c)) -> c4(F(encArg(x0), c), ENCARG(x0))
   ENCARG(cons_f(a, x1)) -> c4(ENCARG(x1))
   ENCARG(cons_f(b, x1)) -> c4(ENCARG(x1))
   ENCARG(cons_f(c, x1)) -> c4(F(c, encArg(x1)), ENCARG(x1))
   ENCODE_F(x0, a) -> c1(F(encArg(x0), a))
   ENCODE_F(x0, b) -> c1(F(encArg(x0), b))
   ENCODE_F(x0, c) -> c1(F(encArg(x0), c))
   ENCODE_F(x0, cons_f(z0, z1)) -> c1(F(encArg(x0), f(encArg(z0), encArg(z1))))
   ENCODE_F(c, x1) -> c1(F(c, encArg(x1)))
   ENCODE_F(cons_f(z0, z1), x1) -> c1(F(f(encArg(z0), encArg(z1)), encArg(x1)))
   ENCARG(cons_f(x0, cons_f(x1, a))) -> c4(F(encArg(x0), f(encArg(x1), a)), ENCARG(x0), ENCARG(cons_f(x1, a)))
   ENCARG(cons_f(x0, cons_f(x1, b))) -> c4(F(encArg(x0), f(encArg(x1), b)), ENCARG(x0), ENCARG(cons_f(x1, b)))
   ENCARG(cons_f(x0, cons_f(x1, c))) -> c4(F(encArg(x0), f(encArg(x1), c)), ENCARG(x0), ENCARG(cons_f(x1, c)))
   ENCARG(cons_f(x0, cons_f(x1, cons_f(z0, z1)))) -> c4(F(encArg(x0), f(encArg(x1), f(encArg(z0), encArg(z1)))), ENCARG(x0), ENCARG(cons_f(x1, cons_f(z0, z1))))
   ENCARG(cons_f(x0, cons_f(a, x2))) -> c4(F(encArg(x0), f(a, encArg(x2))), ENCARG(x0), ENCARG(cons_f(a, x2)))
   ENCARG(cons_f(x0, cons_f(b, x2))) -> c4(F(encArg(x0), f(b, encArg(x2))), ENCARG(x0), ENCARG(cons_f(b, x2)))
   ENCARG(cons_f(x0, cons_f(c, x2))) -> c4(F(encArg(x0), f(c, encArg(x2))), ENCARG(x0), ENCARG(cons_f(c, x2)))
   ENCARG(cons_f(x0, cons_f(cons_f(z0, z1), x2))) -> c4(F(encArg(x0), f(f(encArg(z0), encArg(z1)), encArg(x2))), ENCARG(x0), ENCARG(cons_f(cons_f(z0, z1), x2)))
   ENCARG(cons_f(cons_f(z0, z1), cons_f(x1, x2))) -> c4(F(f(encArg(z0), encArg(z1)), f(encArg(x1), encArg(x2))), ENCARG(cons_f(z0, z1)), ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(a, cons_f(x1, x2))) -> c4(ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(b, cons_f(x1, x2))) -> c4(ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(c, cons_f(x1, x2))) -> c4(F(c, f(encArg(x1), encArg(x2))), ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(cons_f(x0, a), x2)) -> c4(F(f(encArg(x0), a), encArg(x2)), ENCARG(cons_f(x0, a)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, b), x2)) -> c4(F(f(encArg(x0), b), encArg(x2)), ENCARG(cons_f(x0, b)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, c), x2)) -> c4(F(f(encArg(x0), c), encArg(x2)), ENCARG(cons_f(x0, c)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, cons_f(z0, z1)), x2)) -> c4(F(f(encArg(x0), f(encArg(z0), encArg(z1))), encArg(x2)), ENCARG(cons_f(x0, cons_f(z0, z1))), ENCARG(x2))
   ENCARG(cons_f(cons_f(b, x1), x2)) -> c4(F(f(b, encArg(x1)), encArg(x2)), ENCARG(cons_f(b, x1)), ENCARG(x2))
   ENCARG(cons_f(cons_f(c, x1), x2)) -> c4(F(f(c, encArg(x1)), encArg(x2)), ENCARG(cons_f(c, x1)), ENCARG(x2))
   ENCARG(cons_f(cons_f(cons_f(z0, z1), x1), x2)) -> c4(F(f(f(encArg(z0), encArg(z1)), encArg(x1)), encArg(x2)), ENCARG(cons_f(cons_f(z0, z1), x1)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, x1), a)) -> c4(F(f(encArg(x0), encArg(x1)), a), ENCARG(cons_f(x0, x1)))
   ENCARG(cons_f(cons_f(x0, x1), b)) -> c4(F(f(encArg(x0), encArg(x1)), b), ENCARG(cons_f(x0, x1)))
   ENCARG(cons_f(cons_f(x0, x1), c)) -> c4(F(f(encArg(x0), encArg(x1)), c), ENCARG(cons_f(x0, x1)))
   ENCARG(cons_f(cons_f(a, x1), x2)) -> c4(ENCARG(cons_f(a, x1)), ENCARG(x2))
   ENCARG(cons_f(c, a)) -> c4(F(c, a))
   ENCARG(cons_f(c, b)) -> c4(F(c, b), ENCARG(c))
S tuples:
   F(f(f(a, z0), z1), z2) -> c9(F(f(z0, z2), f(z1, z2)), F(z0, z2), F(z1, z2))
   F(f(b, z0), z1) -> c10
   F(c, z0) -> c11
K tuples:none
Defined Rule Symbols:   encArg_1, f_2

Defined Pair Symbols:   F_2, ENCARG_1, ENCODE_F_2

Compound Symbols:   c9_3, c10, c11, c4_2, c4_1, c1_1, c4_3


----------------------------------------

(71) CdtRhsSimplificationProcessorProof (BOTH BOUNDS(ID, ID))
Removed 1 trailing tuple parts
----------------------------------------

(72)
Obligation:
Complexity Dependency Tuples Problem

Rules:
   encArg(a) -> a
   encArg(b) -> b
   encArg(c) -> c
   encArg(cons_f(z0, z1)) -> f(encArg(z0), encArg(z1))
   f(f(f(a, z0), z1), z2) -> f(f(z0, z2), f(z1, z2))
   f(f(b, z0), z1) -> z0
   f(c, z0) -> z0
Tuples:
   F(f(f(a, z0), z1), z2) -> c9(F(f(z0, z2), f(z1, z2)), F(z0, z2), F(z1, z2))
   F(f(b, z0), z1) -> c10
   F(c, z0) -> c11
   ENCARG(cons_f(x0, c)) -> c4(F(encArg(x0), c), ENCARG(x0))
   ENCARG(cons_f(a, x1)) -> c4(ENCARG(x1))
   ENCARG(cons_f(b, x1)) -> c4(ENCARG(x1))
   ENCARG(cons_f(c, x1)) -> c4(F(c, encArg(x1)), ENCARG(x1))
   ENCODE_F(x0, a) -> c1(F(encArg(x0), a))
   ENCODE_F(x0, b) -> c1(F(encArg(x0), b))
   ENCODE_F(x0, c) -> c1(F(encArg(x0), c))
   ENCODE_F(x0, cons_f(z0, z1)) -> c1(F(encArg(x0), f(encArg(z0), encArg(z1))))
   ENCODE_F(c, x1) -> c1(F(c, encArg(x1)))
   ENCODE_F(cons_f(z0, z1), x1) -> c1(F(f(encArg(z0), encArg(z1)), encArg(x1)))
   ENCARG(cons_f(x0, cons_f(x1, a))) -> c4(F(encArg(x0), f(encArg(x1), a)), ENCARG(x0), ENCARG(cons_f(x1, a)))
   ENCARG(cons_f(x0, cons_f(x1, b))) -> c4(F(encArg(x0), f(encArg(x1), b)), ENCARG(x0), ENCARG(cons_f(x1, b)))
   ENCARG(cons_f(x0, cons_f(x1, c))) -> c4(F(encArg(x0), f(encArg(x1), c)), ENCARG(x0), ENCARG(cons_f(x1, c)))
   ENCARG(cons_f(x0, cons_f(x1, cons_f(z0, z1)))) -> c4(F(encArg(x0), f(encArg(x1), f(encArg(z0), encArg(z1)))), ENCARG(x0), ENCARG(cons_f(x1, cons_f(z0, z1))))
   ENCARG(cons_f(x0, cons_f(a, x2))) -> c4(F(encArg(x0), f(a, encArg(x2))), ENCARG(x0), ENCARG(cons_f(a, x2)))
   ENCARG(cons_f(x0, cons_f(b, x2))) -> c4(F(encArg(x0), f(b, encArg(x2))), ENCARG(x0), ENCARG(cons_f(b, x2)))
   ENCARG(cons_f(x0, cons_f(c, x2))) -> c4(F(encArg(x0), f(c, encArg(x2))), ENCARG(x0), ENCARG(cons_f(c, x2)))
   ENCARG(cons_f(x0, cons_f(cons_f(z0, z1), x2))) -> c4(F(encArg(x0), f(f(encArg(z0), encArg(z1)), encArg(x2))), ENCARG(x0), ENCARG(cons_f(cons_f(z0, z1), x2)))
   ENCARG(cons_f(cons_f(z0, z1), cons_f(x1, x2))) -> c4(F(f(encArg(z0), encArg(z1)), f(encArg(x1), encArg(x2))), ENCARG(cons_f(z0, z1)), ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(a, cons_f(x1, x2))) -> c4(ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(b, cons_f(x1, x2))) -> c4(ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(c, cons_f(x1, x2))) -> c4(F(c, f(encArg(x1), encArg(x2))), ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(cons_f(x0, a), x2)) -> c4(F(f(encArg(x0), a), encArg(x2)), ENCARG(cons_f(x0, a)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, b), x2)) -> c4(F(f(encArg(x0), b), encArg(x2)), ENCARG(cons_f(x0, b)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, c), x2)) -> c4(F(f(encArg(x0), c), encArg(x2)), ENCARG(cons_f(x0, c)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, cons_f(z0, z1)), x2)) -> c4(F(f(encArg(x0), f(encArg(z0), encArg(z1))), encArg(x2)), ENCARG(cons_f(x0, cons_f(z0, z1))), ENCARG(x2))
   ENCARG(cons_f(cons_f(b, x1), x2)) -> c4(F(f(b, encArg(x1)), encArg(x2)), ENCARG(cons_f(b, x1)), ENCARG(x2))
   ENCARG(cons_f(cons_f(c, x1), x2)) -> c4(F(f(c, encArg(x1)), encArg(x2)), ENCARG(cons_f(c, x1)), ENCARG(x2))
   ENCARG(cons_f(cons_f(cons_f(z0, z1), x1), x2)) -> c4(F(f(f(encArg(z0), encArg(z1)), encArg(x1)), encArg(x2)), ENCARG(cons_f(cons_f(z0, z1), x1)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, x1), a)) -> c4(F(f(encArg(x0), encArg(x1)), a), ENCARG(cons_f(x0, x1)))
   ENCARG(cons_f(cons_f(x0, x1), b)) -> c4(F(f(encArg(x0), encArg(x1)), b), ENCARG(cons_f(x0, x1)))
   ENCARG(cons_f(cons_f(x0, x1), c)) -> c4(F(f(encArg(x0), encArg(x1)), c), ENCARG(cons_f(x0, x1)))
   ENCARG(cons_f(cons_f(a, x1), x2)) -> c4(ENCARG(cons_f(a, x1)), ENCARG(x2))
   ENCARG(cons_f(c, a)) -> c4(F(c, a))
   ENCARG(cons_f(c, b)) -> c4(F(c, b))
S tuples:
   F(f(f(a, z0), z1), z2) -> c9(F(f(z0, z2), f(z1, z2)), F(z0, z2), F(z1, z2))
   F(f(b, z0), z1) -> c10
   F(c, z0) -> c11
K tuples:none
Defined Rule Symbols:   encArg_1, f_2

Defined Pair Symbols:   F_2, ENCARG_1, ENCODE_F_2

Compound Symbols:   c9_3, c10, c11, c4_2, c4_1, c1_1, c4_3


----------------------------------------

(73) CdtNarrowingProof (BOTH BOUNDS(ID, ID))
Use narrowing to replace ENCARG(cons_f(x0, c)) -> c4(F(encArg(x0), c), ENCARG(x0)) by 
   ENCARG(cons_f(a, c)) -> c4(F(a, c), ENCARG(a))
   ENCARG(cons_f(b, c)) -> c4(F(b, c), ENCARG(b))
   ENCARG(cons_f(c, c)) -> c4(F(c, c), ENCARG(c))
   ENCARG(cons_f(cons_f(z0, z1), c)) -> c4(F(f(encArg(z0), encArg(z1)), c), ENCARG(cons_f(z0, z1)))

----------------------------------------

(74)
Obligation:
Complexity Dependency Tuples Problem

Rules:
   encArg(a) -> a
   encArg(b) -> b
   encArg(c) -> c
   encArg(cons_f(z0, z1)) -> f(encArg(z0), encArg(z1))
   f(f(f(a, z0), z1), z2) -> f(f(z0, z2), f(z1, z2))
   f(f(b, z0), z1) -> z0
   f(c, z0) -> z0
Tuples:
   F(f(f(a, z0), z1), z2) -> c9(F(f(z0, z2), f(z1, z2)), F(z0, z2), F(z1, z2))
   F(f(b, z0), z1) -> c10
   F(c, z0) -> c11
   ENCARG(cons_f(a, x1)) -> c4(ENCARG(x1))
   ENCARG(cons_f(b, x1)) -> c4(ENCARG(x1))
   ENCARG(cons_f(c, x1)) -> c4(F(c, encArg(x1)), ENCARG(x1))
   ENCODE_F(x0, a) -> c1(F(encArg(x0), a))
   ENCODE_F(x0, b) -> c1(F(encArg(x0), b))
   ENCODE_F(x0, c) -> c1(F(encArg(x0), c))
   ENCODE_F(x0, cons_f(z0, z1)) -> c1(F(encArg(x0), f(encArg(z0), encArg(z1))))
   ENCODE_F(c, x1) -> c1(F(c, encArg(x1)))
   ENCODE_F(cons_f(z0, z1), x1) -> c1(F(f(encArg(z0), encArg(z1)), encArg(x1)))
   ENCARG(cons_f(x0, cons_f(x1, a))) -> c4(F(encArg(x0), f(encArg(x1), a)), ENCARG(x0), ENCARG(cons_f(x1, a)))
   ENCARG(cons_f(x0, cons_f(x1, b))) -> c4(F(encArg(x0), f(encArg(x1), b)), ENCARG(x0), ENCARG(cons_f(x1, b)))
   ENCARG(cons_f(x0, cons_f(x1, c))) -> c4(F(encArg(x0), f(encArg(x1), c)), ENCARG(x0), ENCARG(cons_f(x1, c)))
   ENCARG(cons_f(x0, cons_f(x1, cons_f(z0, z1)))) -> c4(F(encArg(x0), f(encArg(x1), f(encArg(z0), encArg(z1)))), ENCARG(x0), ENCARG(cons_f(x1, cons_f(z0, z1))))
   ENCARG(cons_f(x0, cons_f(a, x2))) -> c4(F(encArg(x0), f(a, encArg(x2))), ENCARG(x0), ENCARG(cons_f(a, x2)))
   ENCARG(cons_f(x0, cons_f(b, x2))) -> c4(F(encArg(x0), f(b, encArg(x2))), ENCARG(x0), ENCARG(cons_f(b, x2)))
   ENCARG(cons_f(x0, cons_f(c, x2))) -> c4(F(encArg(x0), f(c, encArg(x2))), ENCARG(x0), ENCARG(cons_f(c, x2)))
   ENCARG(cons_f(x0, cons_f(cons_f(z0, z1), x2))) -> c4(F(encArg(x0), f(f(encArg(z0), encArg(z1)), encArg(x2))), ENCARG(x0), ENCARG(cons_f(cons_f(z0, z1), x2)))
   ENCARG(cons_f(cons_f(z0, z1), cons_f(x1, x2))) -> c4(F(f(encArg(z0), encArg(z1)), f(encArg(x1), encArg(x2))), ENCARG(cons_f(z0, z1)), ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(a, cons_f(x1, x2))) -> c4(ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(b, cons_f(x1, x2))) -> c4(ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(c, cons_f(x1, x2))) -> c4(F(c, f(encArg(x1), encArg(x2))), ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(cons_f(x0, a), x2)) -> c4(F(f(encArg(x0), a), encArg(x2)), ENCARG(cons_f(x0, a)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, b), x2)) -> c4(F(f(encArg(x0), b), encArg(x2)), ENCARG(cons_f(x0, b)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, c), x2)) -> c4(F(f(encArg(x0), c), encArg(x2)), ENCARG(cons_f(x0, c)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, cons_f(z0, z1)), x2)) -> c4(F(f(encArg(x0), f(encArg(z0), encArg(z1))), encArg(x2)), ENCARG(cons_f(x0, cons_f(z0, z1))), ENCARG(x2))
   ENCARG(cons_f(cons_f(b, x1), x2)) -> c4(F(f(b, encArg(x1)), encArg(x2)), ENCARG(cons_f(b, x1)), ENCARG(x2))
   ENCARG(cons_f(cons_f(c, x1), x2)) -> c4(F(f(c, encArg(x1)), encArg(x2)), ENCARG(cons_f(c, x1)), ENCARG(x2))
   ENCARG(cons_f(cons_f(cons_f(z0, z1), x1), x2)) -> c4(F(f(f(encArg(z0), encArg(z1)), encArg(x1)), encArg(x2)), ENCARG(cons_f(cons_f(z0, z1), x1)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, x1), a)) -> c4(F(f(encArg(x0), encArg(x1)), a), ENCARG(cons_f(x0, x1)))
   ENCARG(cons_f(cons_f(x0, x1), b)) -> c4(F(f(encArg(x0), encArg(x1)), b), ENCARG(cons_f(x0, x1)))
   ENCARG(cons_f(cons_f(x0, x1), c)) -> c4(F(f(encArg(x0), encArg(x1)), c), ENCARG(cons_f(x0, x1)))
   ENCARG(cons_f(cons_f(a, x1), x2)) -> c4(ENCARG(cons_f(a, x1)), ENCARG(x2))
   ENCARG(cons_f(c, a)) -> c4(F(c, a))
   ENCARG(cons_f(c, b)) -> c4(F(c, b))
   ENCARG(cons_f(a, c)) -> c4(F(a, c), ENCARG(a))
   ENCARG(cons_f(b, c)) -> c4(F(b, c), ENCARG(b))
   ENCARG(cons_f(c, c)) -> c4(F(c, c), ENCARG(c))
S tuples:
   F(f(f(a, z0), z1), z2) -> c9(F(f(z0, z2), f(z1, z2)), F(z0, z2), F(z1, z2))
   F(f(b, z0), z1) -> c10
   F(c, z0) -> c11
K tuples:none
Defined Rule Symbols:   encArg_1, f_2

Defined Pair Symbols:   F_2, ENCARG_1, ENCODE_F_2

Compound Symbols:   c9_3, c10, c11, c4_1, c4_2, c1_1, c4_3


----------------------------------------

(75) CdtLeafRemovalProof (BOTH BOUNDS(ID, ID))
Removed 2 trailing nodes:
   ENCARG(cons_f(b, c)) -> c4(F(b, c), ENCARG(b))
   ENCARG(cons_f(a, c)) -> c4(F(a, c), ENCARG(a))

----------------------------------------

(76)
Obligation:
Complexity Dependency Tuples Problem

Rules:
   encArg(a) -> a
   encArg(b) -> b
   encArg(c) -> c
   encArg(cons_f(z0, z1)) -> f(encArg(z0), encArg(z1))
   f(f(f(a, z0), z1), z2) -> f(f(z0, z2), f(z1, z2))
   f(f(b, z0), z1) -> z0
   f(c, z0) -> z0
Tuples:
   F(f(f(a, z0), z1), z2) -> c9(F(f(z0, z2), f(z1, z2)), F(z0, z2), F(z1, z2))
   F(f(b, z0), z1) -> c10
   F(c, z0) -> c11
   ENCARG(cons_f(a, x1)) -> c4(ENCARG(x1))
   ENCARG(cons_f(b, x1)) -> c4(ENCARG(x1))
   ENCARG(cons_f(c, x1)) -> c4(F(c, encArg(x1)), ENCARG(x1))
   ENCODE_F(x0, a) -> c1(F(encArg(x0), a))
   ENCODE_F(x0, b) -> c1(F(encArg(x0), b))
   ENCODE_F(x0, c) -> c1(F(encArg(x0), c))
   ENCODE_F(x0, cons_f(z0, z1)) -> c1(F(encArg(x0), f(encArg(z0), encArg(z1))))
   ENCODE_F(c, x1) -> c1(F(c, encArg(x1)))
   ENCODE_F(cons_f(z0, z1), x1) -> c1(F(f(encArg(z0), encArg(z1)), encArg(x1)))
   ENCARG(cons_f(x0, cons_f(x1, a))) -> c4(F(encArg(x0), f(encArg(x1), a)), ENCARG(x0), ENCARG(cons_f(x1, a)))
   ENCARG(cons_f(x0, cons_f(x1, b))) -> c4(F(encArg(x0), f(encArg(x1), b)), ENCARG(x0), ENCARG(cons_f(x1, b)))
   ENCARG(cons_f(x0, cons_f(x1, c))) -> c4(F(encArg(x0), f(encArg(x1), c)), ENCARG(x0), ENCARG(cons_f(x1, c)))
   ENCARG(cons_f(x0, cons_f(x1, cons_f(z0, z1)))) -> c4(F(encArg(x0), f(encArg(x1), f(encArg(z0), encArg(z1)))), ENCARG(x0), ENCARG(cons_f(x1, cons_f(z0, z1))))
   ENCARG(cons_f(x0, cons_f(a, x2))) -> c4(F(encArg(x0), f(a, encArg(x2))), ENCARG(x0), ENCARG(cons_f(a, x2)))
   ENCARG(cons_f(x0, cons_f(b, x2))) -> c4(F(encArg(x0), f(b, encArg(x2))), ENCARG(x0), ENCARG(cons_f(b, x2)))
   ENCARG(cons_f(x0, cons_f(c, x2))) -> c4(F(encArg(x0), f(c, encArg(x2))), ENCARG(x0), ENCARG(cons_f(c, x2)))
   ENCARG(cons_f(x0, cons_f(cons_f(z0, z1), x2))) -> c4(F(encArg(x0), f(f(encArg(z0), encArg(z1)), encArg(x2))), ENCARG(x0), ENCARG(cons_f(cons_f(z0, z1), x2)))
   ENCARG(cons_f(cons_f(z0, z1), cons_f(x1, x2))) -> c4(F(f(encArg(z0), encArg(z1)), f(encArg(x1), encArg(x2))), ENCARG(cons_f(z0, z1)), ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(a, cons_f(x1, x2))) -> c4(ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(b, cons_f(x1, x2))) -> c4(ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(c, cons_f(x1, x2))) -> c4(F(c, f(encArg(x1), encArg(x2))), ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(cons_f(x0, a), x2)) -> c4(F(f(encArg(x0), a), encArg(x2)), ENCARG(cons_f(x0, a)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, b), x2)) -> c4(F(f(encArg(x0), b), encArg(x2)), ENCARG(cons_f(x0, b)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, c), x2)) -> c4(F(f(encArg(x0), c), encArg(x2)), ENCARG(cons_f(x0, c)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, cons_f(z0, z1)), x2)) -> c4(F(f(encArg(x0), f(encArg(z0), encArg(z1))), encArg(x2)), ENCARG(cons_f(x0, cons_f(z0, z1))), ENCARG(x2))
   ENCARG(cons_f(cons_f(b, x1), x2)) -> c4(F(f(b, encArg(x1)), encArg(x2)), ENCARG(cons_f(b, x1)), ENCARG(x2))
   ENCARG(cons_f(cons_f(c, x1), x2)) -> c4(F(f(c, encArg(x1)), encArg(x2)), ENCARG(cons_f(c, x1)), ENCARG(x2))
   ENCARG(cons_f(cons_f(cons_f(z0, z1), x1), x2)) -> c4(F(f(f(encArg(z0), encArg(z1)), encArg(x1)), encArg(x2)), ENCARG(cons_f(cons_f(z0, z1), x1)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, x1), a)) -> c4(F(f(encArg(x0), encArg(x1)), a), ENCARG(cons_f(x0, x1)))
   ENCARG(cons_f(cons_f(x0, x1), b)) -> c4(F(f(encArg(x0), encArg(x1)), b), ENCARG(cons_f(x0, x1)))
   ENCARG(cons_f(cons_f(x0, x1), c)) -> c4(F(f(encArg(x0), encArg(x1)), c), ENCARG(cons_f(x0, x1)))
   ENCARG(cons_f(cons_f(a, x1), x2)) -> c4(ENCARG(cons_f(a, x1)), ENCARG(x2))
   ENCARG(cons_f(c, a)) -> c4(F(c, a))
   ENCARG(cons_f(c, b)) -> c4(F(c, b))
   ENCARG(cons_f(c, c)) -> c4(F(c, c), ENCARG(c))
S tuples:
   F(f(f(a, z0), z1), z2) -> c9(F(f(z0, z2), f(z1, z2)), F(z0, z2), F(z1, z2))
   F(f(b, z0), z1) -> c10
   F(c, z0) -> c11
K tuples:none
Defined Rule Symbols:   encArg_1, f_2

Defined Pair Symbols:   F_2, ENCARG_1, ENCODE_F_2

Compound Symbols:   c9_3, c10, c11, c4_1, c4_2, c1_1, c4_3


----------------------------------------

(77) CdtRhsSimplificationProcessorProof (BOTH BOUNDS(ID, ID))
Removed 1 trailing tuple parts
----------------------------------------

(78)
Obligation:
Complexity Dependency Tuples Problem

Rules:
   encArg(a) -> a
   encArg(b) -> b
   encArg(c) -> c
   encArg(cons_f(z0, z1)) -> f(encArg(z0), encArg(z1))
   f(f(f(a, z0), z1), z2) -> f(f(z0, z2), f(z1, z2))
   f(f(b, z0), z1) -> z0
   f(c, z0) -> z0
Tuples:
   F(f(f(a, z0), z1), z2) -> c9(F(f(z0, z2), f(z1, z2)), F(z0, z2), F(z1, z2))
   F(f(b, z0), z1) -> c10
   F(c, z0) -> c11
   ENCARG(cons_f(a, x1)) -> c4(ENCARG(x1))
   ENCARG(cons_f(b, x1)) -> c4(ENCARG(x1))
   ENCARG(cons_f(c, x1)) -> c4(F(c, encArg(x1)), ENCARG(x1))
   ENCODE_F(x0, a) -> c1(F(encArg(x0), a))
   ENCODE_F(x0, b) -> c1(F(encArg(x0), b))
   ENCODE_F(x0, c) -> c1(F(encArg(x0), c))
   ENCODE_F(x0, cons_f(z0, z1)) -> c1(F(encArg(x0), f(encArg(z0), encArg(z1))))
   ENCODE_F(c, x1) -> c1(F(c, encArg(x1)))
   ENCODE_F(cons_f(z0, z1), x1) -> c1(F(f(encArg(z0), encArg(z1)), encArg(x1)))
   ENCARG(cons_f(x0, cons_f(x1, a))) -> c4(F(encArg(x0), f(encArg(x1), a)), ENCARG(x0), ENCARG(cons_f(x1, a)))
   ENCARG(cons_f(x0, cons_f(x1, b))) -> c4(F(encArg(x0), f(encArg(x1), b)), ENCARG(x0), ENCARG(cons_f(x1, b)))
   ENCARG(cons_f(x0, cons_f(x1, c))) -> c4(F(encArg(x0), f(encArg(x1), c)), ENCARG(x0), ENCARG(cons_f(x1, c)))
   ENCARG(cons_f(x0, cons_f(x1, cons_f(z0, z1)))) -> c4(F(encArg(x0), f(encArg(x1), f(encArg(z0), encArg(z1)))), ENCARG(x0), ENCARG(cons_f(x1, cons_f(z0, z1))))
   ENCARG(cons_f(x0, cons_f(a, x2))) -> c4(F(encArg(x0), f(a, encArg(x2))), ENCARG(x0), ENCARG(cons_f(a, x2)))
   ENCARG(cons_f(x0, cons_f(b, x2))) -> c4(F(encArg(x0), f(b, encArg(x2))), ENCARG(x0), ENCARG(cons_f(b, x2)))
   ENCARG(cons_f(x0, cons_f(c, x2))) -> c4(F(encArg(x0), f(c, encArg(x2))), ENCARG(x0), ENCARG(cons_f(c, x2)))
   ENCARG(cons_f(x0, cons_f(cons_f(z0, z1), x2))) -> c4(F(encArg(x0), f(f(encArg(z0), encArg(z1)), encArg(x2))), ENCARG(x0), ENCARG(cons_f(cons_f(z0, z1), x2)))
   ENCARG(cons_f(cons_f(z0, z1), cons_f(x1, x2))) -> c4(F(f(encArg(z0), encArg(z1)), f(encArg(x1), encArg(x2))), ENCARG(cons_f(z0, z1)), ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(a, cons_f(x1, x2))) -> c4(ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(b, cons_f(x1, x2))) -> c4(ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(c, cons_f(x1, x2))) -> c4(F(c, f(encArg(x1), encArg(x2))), ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(cons_f(x0, a), x2)) -> c4(F(f(encArg(x0), a), encArg(x2)), ENCARG(cons_f(x0, a)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, b), x2)) -> c4(F(f(encArg(x0), b), encArg(x2)), ENCARG(cons_f(x0, b)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, c), x2)) -> c4(F(f(encArg(x0), c), encArg(x2)), ENCARG(cons_f(x0, c)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, cons_f(z0, z1)), x2)) -> c4(F(f(encArg(x0), f(encArg(z0), encArg(z1))), encArg(x2)), ENCARG(cons_f(x0, cons_f(z0, z1))), ENCARG(x2))
   ENCARG(cons_f(cons_f(b, x1), x2)) -> c4(F(f(b, encArg(x1)), encArg(x2)), ENCARG(cons_f(b, x1)), ENCARG(x2))
   ENCARG(cons_f(cons_f(c, x1), x2)) -> c4(F(f(c, encArg(x1)), encArg(x2)), ENCARG(cons_f(c, x1)), ENCARG(x2))
   ENCARG(cons_f(cons_f(cons_f(z0, z1), x1), x2)) -> c4(F(f(f(encArg(z0), encArg(z1)), encArg(x1)), encArg(x2)), ENCARG(cons_f(cons_f(z0, z1), x1)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, x1), a)) -> c4(F(f(encArg(x0), encArg(x1)), a), ENCARG(cons_f(x0, x1)))
   ENCARG(cons_f(cons_f(x0, x1), b)) -> c4(F(f(encArg(x0), encArg(x1)), b), ENCARG(cons_f(x0, x1)))
   ENCARG(cons_f(cons_f(x0, x1), c)) -> c4(F(f(encArg(x0), encArg(x1)), c), ENCARG(cons_f(x0, x1)))
   ENCARG(cons_f(cons_f(a, x1), x2)) -> c4(ENCARG(cons_f(a, x1)), ENCARG(x2))
   ENCARG(cons_f(c, a)) -> c4(F(c, a))
   ENCARG(cons_f(c, b)) -> c4(F(c, b))
   ENCARG(cons_f(c, c)) -> c4(F(c, c))
S tuples:
   F(f(f(a, z0), z1), z2) -> c9(F(f(z0, z2), f(z1, z2)), F(z0, z2), F(z1, z2))
   F(f(b, z0), z1) -> c10
   F(c, z0) -> c11
K tuples:none
Defined Rule Symbols:   encArg_1, f_2

Defined Pair Symbols:   F_2, ENCARG_1, ENCODE_F_2

Compound Symbols:   c9_3, c10, c11, c4_1, c4_2, c1_1, c4_3


----------------------------------------

(79) CdtNarrowingProof (BOTH BOUNDS(ID, ID))
Use narrowing to replace ENCODE_F(x0, a) -> c1(F(encArg(x0), a)) by 
   ENCODE_F(a, a) -> c1(F(a, a))
   ENCODE_F(b, a) -> c1(F(b, a))
   ENCODE_F(c, a) -> c1(F(c, a))
   ENCODE_F(cons_f(z0, z1), a) -> c1(F(f(encArg(z0), encArg(z1)), a))

----------------------------------------

(80)
Obligation:
Complexity Dependency Tuples Problem

Rules:
   encArg(a) -> a
   encArg(b) -> b
   encArg(c) -> c
   encArg(cons_f(z0, z1)) -> f(encArg(z0), encArg(z1))
   f(f(f(a, z0), z1), z2) -> f(f(z0, z2), f(z1, z2))
   f(f(b, z0), z1) -> z0
   f(c, z0) -> z0
Tuples:
   F(f(f(a, z0), z1), z2) -> c9(F(f(z0, z2), f(z1, z2)), F(z0, z2), F(z1, z2))
   F(f(b, z0), z1) -> c10
   F(c, z0) -> c11
   ENCARG(cons_f(a, x1)) -> c4(ENCARG(x1))
   ENCARG(cons_f(b, x1)) -> c4(ENCARG(x1))
   ENCARG(cons_f(c, x1)) -> c4(F(c, encArg(x1)), ENCARG(x1))
   ENCODE_F(x0, b) -> c1(F(encArg(x0), b))
   ENCODE_F(x0, c) -> c1(F(encArg(x0), c))
   ENCODE_F(x0, cons_f(z0, z1)) -> c1(F(encArg(x0), f(encArg(z0), encArg(z1))))
   ENCODE_F(c, x1) -> c1(F(c, encArg(x1)))
   ENCODE_F(cons_f(z0, z1), x1) -> c1(F(f(encArg(z0), encArg(z1)), encArg(x1)))
   ENCARG(cons_f(x0, cons_f(x1, a))) -> c4(F(encArg(x0), f(encArg(x1), a)), ENCARG(x0), ENCARG(cons_f(x1, a)))
   ENCARG(cons_f(x0, cons_f(x1, b))) -> c4(F(encArg(x0), f(encArg(x1), b)), ENCARG(x0), ENCARG(cons_f(x1, b)))
   ENCARG(cons_f(x0, cons_f(x1, c))) -> c4(F(encArg(x0), f(encArg(x1), c)), ENCARG(x0), ENCARG(cons_f(x1, c)))
   ENCARG(cons_f(x0, cons_f(x1, cons_f(z0, z1)))) -> c4(F(encArg(x0), f(encArg(x1), f(encArg(z0), encArg(z1)))), ENCARG(x0), ENCARG(cons_f(x1, cons_f(z0, z1))))
   ENCARG(cons_f(x0, cons_f(a, x2))) -> c4(F(encArg(x0), f(a, encArg(x2))), ENCARG(x0), ENCARG(cons_f(a, x2)))
   ENCARG(cons_f(x0, cons_f(b, x2))) -> c4(F(encArg(x0), f(b, encArg(x2))), ENCARG(x0), ENCARG(cons_f(b, x2)))
   ENCARG(cons_f(x0, cons_f(c, x2))) -> c4(F(encArg(x0), f(c, encArg(x2))), ENCARG(x0), ENCARG(cons_f(c, x2)))
   ENCARG(cons_f(x0, cons_f(cons_f(z0, z1), x2))) -> c4(F(encArg(x0), f(f(encArg(z0), encArg(z1)), encArg(x2))), ENCARG(x0), ENCARG(cons_f(cons_f(z0, z1), x2)))
   ENCARG(cons_f(cons_f(z0, z1), cons_f(x1, x2))) -> c4(F(f(encArg(z0), encArg(z1)), f(encArg(x1), encArg(x2))), ENCARG(cons_f(z0, z1)), ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(a, cons_f(x1, x2))) -> c4(ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(b, cons_f(x1, x2))) -> c4(ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(c, cons_f(x1, x2))) -> c4(F(c, f(encArg(x1), encArg(x2))), ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(cons_f(x0, a), x2)) -> c4(F(f(encArg(x0), a), encArg(x2)), ENCARG(cons_f(x0, a)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, b), x2)) -> c4(F(f(encArg(x0), b), encArg(x2)), ENCARG(cons_f(x0, b)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, c), x2)) -> c4(F(f(encArg(x0), c), encArg(x2)), ENCARG(cons_f(x0, c)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, cons_f(z0, z1)), x2)) -> c4(F(f(encArg(x0), f(encArg(z0), encArg(z1))), encArg(x2)), ENCARG(cons_f(x0, cons_f(z0, z1))), ENCARG(x2))
   ENCARG(cons_f(cons_f(b, x1), x2)) -> c4(F(f(b, encArg(x1)), encArg(x2)), ENCARG(cons_f(b, x1)), ENCARG(x2))
   ENCARG(cons_f(cons_f(c, x1), x2)) -> c4(F(f(c, encArg(x1)), encArg(x2)), ENCARG(cons_f(c, x1)), ENCARG(x2))
   ENCARG(cons_f(cons_f(cons_f(z0, z1), x1), x2)) -> c4(F(f(f(encArg(z0), encArg(z1)), encArg(x1)), encArg(x2)), ENCARG(cons_f(cons_f(z0, z1), x1)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, x1), a)) -> c4(F(f(encArg(x0), encArg(x1)), a), ENCARG(cons_f(x0, x1)))
   ENCARG(cons_f(cons_f(x0, x1), b)) -> c4(F(f(encArg(x0), encArg(x1)), b), ENCARG(cons_f(x0, x1)))
   ENCARG(cons_f(cons_f(x0, x1), c)) -> c4(F(f(encArg(x0), encArg(x1)), c), ENCARG(cons_f(x0, x1)))
   ENCARG(cons_f(cons_f(a, x1), x2)) -> c4(ENCARG(cons_f(a, x1)), ENCARG(x2))
   ENCARG(cons_f(c, a)) -> c4(F(c, a))
   ENCARG(cons_f(c, b)) -> c4(F(c, b))
   ENCARG(cons_f(c, c)) -> c4(F(c, c))
   ENCODE_F(a, a) -> c1(F(a, a))
   ENCODE_F(b, a) -> c1(F(b, a))
   ENCODE_F(c, a) -> c1(F(c, a))
   ENCODE_F(cons_f(z0, z1), a) -> c1(F(f(encArg(z0), encArg(z1)), a))
S tuples:
   F(f(f(a, z0), z1), z2) -> c9(F(f(z0, z2), f(z1, z2)), F(z0, z2), F(z1, z2))
   F(f(b, z0), z1) -> c10
   F(c, z0) -> c11
K tuples:none
Defined Rule Symbols:   encArg_1, f_2

Defined Pair Symbols:   F_2, ENCARG_1, ENCODE_F_2

Compound Symbols:   c9_3, c10, c11, c4_1, c4_2, c1_1, c4_3


----------------------------------------

(81) CdtLeafRemovalProof (ComplexityIfPolyImplication)
Removed 1 leading nodes:
   ENCODE_F(c, a) -> c1(F(c, a))
Removed 2 trailing nodes:
   ENCODE_F(a, a) -> c1(F(a, a))
   ENCODE_F(b, a) -> c1(F(b, a))

----------------------------------------

(82)
Obligation:
Complexity Dependency Tuples Problem

Rules:
   encArg(a) -> a
   encArg(b) -> b
   encArg(c) -> c
   encArg(cons_f(z0, z1)) -> f(encArg(z0), encArg(z1))
   f(f(f(a, z0), z1), z2) -> f(f(z0, z2), f(z1, z2))
   f(f(b, z0), z1) -> z0
   f(c, z0) -> z0
Tuples:
   F(f(f(a, z0), z1), z2) -> c9(F(f(z0, z2), f(z1, z2)), F(z0, z2), F(z1, z2))
   F(f(b, z0), z1) -> c10
   F(c, z0) -> c11
   ENCARG(cons_f(a, x1)) -> c4(ENCARG(x1))
   ENCARG(cons_f(b, x1)) -> c4(ENCARG(x1))
   ENCARG(cons_f(c, x1)) -> c4(F(c, encArg(x1)), ENCARG(x1))
   ENCODE_F(x0, b) -> c1(F(encArg(x0), b))
   ENCODE_F(x0, c) -> c1(F(encArg(x0), c))
   ENCODE_F(x0, cons_f(z0, z1)) -> c1(F(encArg(x0), f(encArg(z0), encArg(z1))))
   ENCODE_F(c, x1) -> c1(F(c, encArg(x1)))
   ENCODE_F(cons_f(z0, z1), x1) -> c1(F(f(encArg(z0), encArg(z1)), encArg(x1)))
   ENCARG(cons_f(x0, cons_f(x1, a))) -> c4(F(encArg(x0), f(encArg(x1), a)), ENCARG(x0), ENCARG(cons_f(x1, a)))
   ENCARG(cons_f(x0, cons_f(x1, b))) -> c4(F(encArg(x0), f(encArg(x1), b)), ENCARG(x0), ENCARG(cons_f(x1, b)))
   ENCARG(cons_f(x0, cons_f(x1, c))) -> c4(F(encArg(x0), f(encArg(x1), c)), ENCARG(x0), ENCARG(cons_f(x1, c)))
   ENCARG(cons_f(x0, cons_f(x1, cons_f(z0, z1)))) -> c4(F(encArg(x0), f(encArg(x1), f(encArg(z0), encArg(z1)))), ENCARG(x0), ENCARG(cons_f(x1, cons_f(z0, z1))))
   ENCARG(cons_f(x0, cons_f(a, x2))) -> c4(F(encArg(x0), f(a, encArg(x2))), ENCARG(x0), ENCARG(cons_f(a, x2)))
   ENCARG(cons_f(x0, cons_f(b, x2))) -> c4(F(encArg(x0), f(b, encArg(x2))), ENCARG(x0), ENCARG(cons_f(b, x2)))
   ENCARG(cons_f(x0, cons_f(c, x2))) -> c4(F(encArg(x0), f(c, encArg(x2))), ENCARG(x0), ENCARG(cons_f(c, x2)))
   ENCARG(cons_f(x0, cons_f(cons_f(z0, z1), x2))) -> c4(F(encArg(x0), f(f(encArg(z0), encArg(z1)), encArg(x2))), ENCARG(x0), ENCARG(cons_f(cons_f(z0, z1), x2)))
   ENCARG(cons_f(cons_f(z0, z1), cons_f(x1, x2))) -> c4(F(f(encArg(z0), encArg(z1)), f(encArg(x1), encArg(x2))), ENCARG(cons_f(z0, z1)), ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(a, cons_f(x1, x2))) -> c4(ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(b, cons_f(x1, x2))) -> c4(ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(c, cons_f(x1, x2))) -> c4(F(c, f(encArg(x1), encArg(x2))), ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(cons_f(x0, a), x2)) -> c4(F(f(encArg(x0), a), encArg(x2)), ENCARG(cons_f(x0, a)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, b), x2)) -> c4(F(f(encArg(x0), b), encArg(x2)), ENCARG(cons_f(x0, b)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, c), x2)) -> c4(F(f(encArg(x0), c), encArg(x2)), ENCARG(cons_f(x0, c)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, cons_f(z0, z1)), x2)) -> c4(F(f(encArg(x0), f(encArg(z0), encArg(z1))), encArg(x2)), ENCARG(cons_f(x0, cons_f(z0, z1))), ENCARG(x2))
   ENCARG(cons_f(cons_f(b, x1), x2)) -> c4(F(f(b, encArg(x1)), encArg(x2)), ENCARG(cons_f(b, x1)), ENCARG(x2))
   ENCARG(cons_f(cons_f(c, x1), x2)) -> c4(F(f(c, encArg(x1)), encArg(x2)), ENCARG(cons_f(c, x1)), ENCARG(x2))
   ENCARG(cons_f(cons_f(cons_f(z0, z1), x1), x2)) -> c4(F(f(f(encArg(z0), encArg(z1)), encArg(x1)), encArg(x2)), ENCARG(cons_f(cons_f(z0, z1), x1)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, x1), a)) -> c4(F(f(encArg(x0), encArg(x1)), a), ENCARG(cons_f(x0, x1)))
   ENCARG(cons_f(cons_f(x0, x1), b)) -> c4(F(f(encArg(x0), encArg(x1)), b), ENCARG(cons_f(x0, x1)))
   ENCARG(cons_f(cons_f(x0, x1), c)) -> c4(F(f(encArg(x0), encArg(x1)), c), ENCARG(cons_f(x0, x1)))
   ENCARG(cons_f(cons_f(a, x1), x2)) -> c4(ENCARG(cons_f(a, x1)), ENCARG(x2))
   ENCARG(cons_f(c, a)) -> c4(F(c, a))
   ENCARG(cons_f(c, b)) -> c4(F(c, b))
   ENCARG(cons_f(c, c)) -> c4(F(c, c))
   ENCODE_F(cons_f(z0, z1), a) -> c1(F(f(encArg(z0), encArg(z1)), a))
S tuples:
   F(f(f(a, z0), z1), z2) -> c9(F(f(z0, z2), f(z1, z2)), F(z0, z2), F(z1, z2))
   F(f(b, z0), z1) -> c10
   F(c, z0) -> c11
K tuples:none
Defined Rule Symbols:   encArg_1, f_2

Defined Pair Symbols:   F_2, ENCARG_1, ENCODE_F_2

Compound Symbols:   c9_3, c10, c11, c4_1, c4_2, c1_1, c4_3


----------------------------------------

(83) CdtNarrowingProof (BOTH BOUNDS(ID, ID))
Use narrowing to replace ENCODE_F(x0, b) -> c1(F(encArg(x0), b)) by 
   ENCODE_F(a, b) -> c1(F(a, b))
   ENCODE_F(b, b) -> c1(F(b, b))
   ENCODE_F(c, b) -> c1(F(c, b))
   ENCODE_F(cons_f(z0, z1), b) -> c1(F(f(encArg(z0), encArg(z1)), b))

----------------------------------------

(84)
Obligation:
Complexity Dependency Tuples Problem

Rules:
   encArg(a) -> a
   encArg(b) -> b
   encArg(c) -> c
   encArg(cons_f(z0, z1)) -> f(encArg(z0), encArg(z1))
   f(f(f(a, z0), z1), z2) -> f(f(z0, z2), f(z1, z2))
   f(f(b, z0), z1) -> z0
   f(c, z0) -> z0
Tuples:
   F(f(f(a, z0), z1), z2) -> c9(F(f(z0, z2), f(z1, z2)), F(z0, z2), F(z1, z2))
   F(f(b, z0), z1) -> c10
   F(c, z0) -> c11
   ENCARG(cons_f(a, x1)) -> c4(ENCARG(x1))
   ENCARG(cons_f(b, x1)) -> c4(ENCARG(x1))
   ENCARG(cons_f(c, x1)) -> c4(F(c, encArg(x1)), ENCARG(x1))
   ENCODE_F(x0, c) -> c1(F(encArg(x0), c))
   ENCODE_F(x0, cons_f(z0, z1)) -> c1(F(encArg(x0), f(encArg(z0), encArg(z1))))
   ENCODE_F(c, x1) -> c1(F(c, encArg(x1)))
   ENCODE_F(cons_f(z0, z1), x1) -> c1(F(f(encArg(z0), encArg(z1)), encArg(x1)))
   ENCARG(cons_f(x0, cons_f(x1, a))) -> c4(F(encArg(x0), f(encArg(x1), a)), ENCARG(x0), ENCARG(cons_f(x1, a)))
   ENCARG(cons_f(x0, cons_f(x1, b))) -> c4(F(encArg(x0), f(encArg(x1), b)), ENCARG(x0), ENCARG(cons_f(x1, b)))
   ENCARG(cons_f(x0, cons_f(x1, c))) -> c4(F(encArg(x0), f(encArg(x1), c)), ENCARG(x0), ENCARG(cons_f(x1, c)))
   ENCARG(cons_f(x0, cons_f(x1, cons_f(z0, z1)))) -> c4(F(encArg(x0), f(encArg(x1), f(encArg(z0), encArg(z1)))), ENCARG(x0), ENCARG(cons_f(x1, cons_f(z0, z1))))
   ENCARG(cons_f(x0, cons_f(a, x2))) -> c4(F(encArg(x0), f(a, encArg(x2))), ENCARG(x0), ENCARG(cons_f(a, x2)))
   ENCARG(cons_f(x0, cons_f(b, x2))) -> c4(F(encArg(x0), f(b, encArg(x2))), ENCARG(x0), ENCARG(cons_f(b, x2)))
   ENCARG(cons_f(x0, cons_f(c, x2))) -> c4(F(encArg(x0), f(c, encArg(x2))), ENCARG(x0), ENCARG(cons_f(c, x2)))
   ENCARG(cons_f(x0, cons_f(cons_f(z0, z1), x2))) -> c4(F(encArg(x0), f(f(encArg(z0), encArg(z1)), encArg(x2))), ENCARG(x0), ENCARG(cons_f(cons_f(z0, z1), x2)))
   ENCARG(cons_f(cons_f(z0, z1), cons_f(x1, x2))) -> c4(F(f(encArg(z0), encArg(z1)), f(encArg(x1), encArg(x2))), ENCARG(cons_f(z0, z1)), ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(a, cons_f(x1, x2))) -> c4(ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(b, cons_f(x1, x2))) -> c4(ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(c, cons_f(x1, x2))) -> c4(F(c, f(encArg(x1), encArg(x2))), ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(cons_f(x0, a), x2)) -> c4(F(f(encArg(x0), a), encArg(x2)), ENCARG(cons_f(x0, a)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, b), x2)) -> c4(F(f(encArg(x0), b), encArg(x2)), ENCARG(cons_f(x0, b)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, c), x2)) -> c4(F(f(encArg(x0), c), encArg(x2)), ENCARG(cons_f(x0, c)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, cons_f(z0, z1)), x2)) -> c4(F(f(encArg(x0), f(encArg(z0), encArg(z1))), encArg(x2)), ENCARG(cons_f(x0, cons_f(z0, z1))), ENCARG(x2))
   ENCARG(cons_f(cons_f(b, x1), x2)) -> c4(F(f(b, encArg(x1)), encArg(x2)), ENCARG(cons_f(b, x1)), ENCARG(x2))
   ENCARG(cons_f(cons_f(c, x1), x2)) -> c4(F(f(c, encArg(x1)), encArg(x2)), ENCARG(cons_f(c, x1)), ENCARG(x2))
   ENCARG(cons_f(cons_f(cons_f(z0, z1), x1), x2)) -> c4(F(f(f(encArg(z0), encArg(z1)), encArg(x1)), encArg(x2)), ENCARG(cons_f(cons_f(z0, z1), x1)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, x1), a)) -> c4(F(f(encArg(x0), encArg(x1)), a), ENCARG(cons_f(x0, x1)))
   ENCARG(cons_f(cons_f(x0, x1), b)) -> c4(F(f(encArg(x0), encArg(x1)), b), ENCARG(cons_f(x0, x1)))
   ENCARG(cons_f(cons_f(x0, x1), c)) -> c4(F(f(encArg(x0), encArg(x1)), c), ENCARG(cons_f(x0, x1)))
   ENCARG(cons_f(cons_f(a, x1), x2)) -> c4(ENCARG(cons_f(a, x1)), ENCARG(x2))
   ENCARG(cons_f(c, a)) -> c4(F(c, a))
   ENCARG(cons_f(c, b)) -> c4(F(c, b))
   ENCARG(cons_f(c, c)) -> c4(F(c, c))
   ENCODE_F(cons_f(z0, z1), a) -> c1(F(f(encArg(z0), encArg(z1)), a))
   ENCODE_F(a, b) -> c1(F(a, b))
   ENCODE_F(b, b) -> c1(F(b, b))
   ENCODE_F(c, b) -> c1(F(c, b))
   ENCODE_F(cons_f(z0, z1), b) -> c1(F(f(encArg(z0), encArg(z1)), b))
S tuples:
   F(f(f(a, z0), z1), z2) -> c9(F(f(z0, z2), f(z1, z2)), F(z0, z2), F(z1, z2))
   F(f(b, z0), z1) -> c10
   F(c, z0) -> c11
K tuples:none
Defined Rule Symbols:   encArg_1, f_2

Defined Pair Symbols:   F_2, ENCARG_1, ENCODE_F_2

Compound Symbols:   c9_3, c10, c11, c4_1, c4_2, c1_1, c4_3


----------------------------------------

(85) CdtLeafRemovalProof (ComplexityIfPolyImplication)
Removed 1 leading nodes:
   ENCODE_F(c, b) -> c1(F(c, b))
Removed 2 trailing nodes:
   ENCODE_F(b, b) -> c1(F(b, b))
   ENCODE_F(a, b) -> c1(F(a, b))

----------------------------------------

(86)
Obligation:
Complexity Dependency Tuples Problem

Rules:
   encArg(a) -> a
   encArg(b) -> b
   encArg(c) -> c
   encArg(cons_f(z0, z1)) -> f(encArg(z0), encArg(z1))
   f(f(f(a, z0), z1), z2) -> f(f(z0, z2), f(z1, z2))
   f(f(b, z0), z1) -> z0
   f(c, z0) -> z0
Tuples:
   F(f(f(a, z0), z1), z2) -> c9(F(f(z0, z2), f(z1, z2)), F(z0, z2), F(z1, z2))
   F(f(b, z0), z1) -> c10
   F(c, z0) -> c11
   ENCARG(cons_f(a, x1)) -> c4(ENCARG(x1))
   ENCARG(cons_f(b, x1)) -> c4(ENCARG(x1))
   ENCARG(cons_f(c, x1)) -> c4(F(c, encArg(x1)), ENCARG(x1))
   ENCODE_F(x0, c) -> c1(F(encArg(x0), c))
   ENCODE_F(x0, cons_f(z0, z1)) -> c1(F(encArg(x0), f(encArg(z0), encArg(z1))))
   ENCODE_F(c, x1) -> c1(F(c, encArg(x1)))
   ENCODE_F(cons_f(z0, z1), x1) -> c1(F(f(encArg(z0), encArg(z1)), encArg(x1)))
   ENCARG(cons_f(x0, cons_f(x1, a))) -> c4(F(encArg(x0), f(encArg(x1), a)), ENCARG(x0), ENCARG(cons_f(x1, a)))
   ENCARG(cons_f(x0, cons_f(x1, b))) -> c4(F(encArg(x0), f(encArg(x1), b)), ENCARG(x0), ENCARG(cons_f(x1, b)))
   ENCARG(cons_f(x0, cons_f(x1, c))) -> c4(F(encArg(x0), f(encArg(x1), c)), ENCARG(x0), ENCARG(cons_f(x1, c)))
   ENCARG(cons_f(x0, cons_f(x1, cons_f(z0, z1)))) -> c4(F(encArg(x0), f(encArg(x1), f(encArg(z0), encArg(z1)))), ENCARG(x0), ENCARG(cons_f(x1, cons_f(z0, z1))))
   ENCARG(cons_f(x0, cons_f(a, x2))) -> c4(F(encArg(x0), f(a, encArg(x2))), ENCARG(x0), ENCARG(cons_f(a, x2)))
   ENCARG(cons_f(x0, cons_f(b, x2))) -> c4(F(encArg(x0), f(b, encArg(x2))), ENCARG(x0), ENCARG(cons_f(b, x2)))
   ENCARG(cons_f(x0, cons_f(c, x2))) -> c4(F(encArg(x0), f(c, encArg(x2))), ENCARG(x0), ENCARG(cons_f(c, x2)))
   ENCARG(cons_f(x0, cons_f(cons_f(z0, z1), x2))) -> c4(F(encArg(x0), f(f(encArg(z0), encArg(z1)), encArg(x2))), ENCARG(x0), ENCARG(cons_f(cons_f(z0, z1), x2)))
   ENCARG(cons_f(cons_f(z0, z1), cons_f(x1, x2))) -> c4(F(f(encArg(z0), encArg(z1)), f(encArg(x1), encArg(x2))), ENCARG(cons_f(z0, z1)), ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(a, cons_f(x1, x2))) -> c4(ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(b, cons_f(x1, x2))) -> c4(ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(c, cons_f(x1, x2))) -> c4(F(c, f(encArg(x1), encArg(x2))), ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(cons_f(x0, a), x2)) -> c4(F(f(encArg(x0), a), encArg(x2)), ENCARG(cons_f(x0, a)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, b), x2)) -> c4(F(f(encArg(x0), b), encArg(x2)), ENCARG(cons_f(x0, b)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, c), x2)) -> c4(F(f(encArg(x0), c), encArg(x2)), ENCARG(cons_f(x0, c)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, cons_f(z0, z1)), x2)) -> c4(F(f(encArg(x0), f(encArg(z0), encArg(z1))), encArg(x2)), ENCARG(cons_f(x0, cons_f(z0, z1))), ENCARG(x2))
   ENCARG(cons_f(cons_f(b, x1), x2)) -> c4(F(f(b, encArg(x1)), encArg(x2)), ENCARG(cons_f(b, x1)), ENCARG(x2))
   ENCARG(cons_f(cons_f(c, x1), x2)) -> c4(F(f(c, encArg(x1)), encArg(x2)), ENCARG(cons_f(c, x1)), ENCARG(x2))
   ENCARG(cons_f(cons_f(cons_f(z0, z1), x1), x2)) -> c4(F(f(f(encArg(z0), encArg(z1)), encArg(x1)), encArg(x2)), ENCARG(cons_f(cons_f(z0, z1), x1)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, x1), a)) -> c4(F(f(encArg(x0), encArg(x1)), a), ENCARG(cons_f(x0, x1)))
   ENCARG(cons_f(cons_f(x0, x1), b)) -> c4(F(f(encArg(x0), encArg(x1)), b), ENCARG(cons_f(x0, x1)))
   ENCARG(cons_f(cons_f(x0, x1), c)) -> c4(F(f(encArg(x0), encArg(x1)), c), ENCARG(cons_f(x0, x1)))
   ENCARG(cons_f(cons_f(a, x1), x2)) -> c4(ENCARG(cons_f(a, x1)), ENCARG(x2))
   ENCARG(cons_f(c, a)) -> c4(F(c, a))
   ENCARG(cons_f(c, b)) -> c4(F(c, b))
   ENCARG(cons_f(c, c)) -> c4(F(c, c))
   ENCODE_F(cons_f(z0, z1), a) -> c1(F(f(encArg(z0), encArg(z1)), a))
   ENCODE_F(cons_f(z0, z1), b) -> c1(F(f(encArg(z0), encArg(z1)), b))
S tuples:
   F(f(f(a, z0), z1), z2) -> c9(F(f(z0, z2), f(z1, z2)), F(z0, z2), F(z1, z2))
   F(f(b, z0), z1) -> c10
   F(c, z0) -> c11
K tuples:none
Defined Rule Symbols:   encArg_1, f_2

Defined Pair Symbols:   F_2, ENCARG_1, ENCODE_F_2

Compound Symbols:   c9_3, c10, c11, c4_1, c4_2, c1_1, c4_3


----------------------------------------

(87) CdtNarrowingProof (BOTH BOUNDS(ID, ID))
Use narrowing to replace ENCODE_F(x0, c) -> c1(F(encArg(x0), c)) by 
   ENCODE_F(a, c) -> c1(F(a, c))
   ENCODE_F(b, c) -> c1(F(b, c))
   ENCODE_F(c, c) -> c1(F(c, c))
   ENCODE_F(cons_f(z0, z1), c) -> c1(F(f(encArg(z0), encArg(z1)), c))

----------------------------------------

(88)
Obligation:
Complexity Dependency Tuples Problem

Rules:
   encArg(a) -> a
   encArg(b) -> b
   encArg(c) -> c
   encArg(cons_f(z0, z1)) -> f(encArg(z0), encArg(z1))
   f(f(f(a, z0), z1), z2) -> f(f(z0, z2), f(z1, z2))
   f(f(b, z0), z1) -> z0
   f(c, z0) -> z0
Tuples:
   F(f(f(a, z0), z1), z2) -> c9(F(f(z0, z2), f(z1, z2)), F(z0, z2), F(z1, z2))
   F(f(b, z0), z1) -> c10
   F(c, z0) -> c11
   ENCARG(cons_f(a, x1)) -> c4(ENCARG(x1))
   ENCARG(cons_f(b, x1)) -> c4(ENCARG(x1))
   ENCARG(cons_f(c, x1)) -> c4(F(c, encArg(x1)), ENCARG(x1))
   ENCODE_F(x0, cons_f(z0, z1)) -> c1(F(encArg(x0), f(encArg(z0), encArg(z1))))
   ENCODE_F(c, x1) -> c1(F(c, encArg(x1)))
   ENCODE_F(cons_f(z0, z1), x1) -> c1(F(f(encArg(z0), encArg(z1)), encArg(x1)))
   ENCARG(cons_f(x0, cons_f(x1, a))) -> c4(F(encArg(x0), f(encArg(x1), a)), ENCARG(x0), ENCARG(cons_f(x1, a)))
   ENCARG(cons_f(x0, cons_f(x1, b))) -> c4(F(encArg(x0), f(encArg(x1), b)), ENCARG(x0), ENCARG(cons_f(x1, b)))
   ENCARG(cons_f(x0, cons_f(x1, c))) -> c4(F(encArg(x0), f(encArg(x1), c)), ENCARG(x0), ENCARG(cons_f(x1, c)))
   ENCARG(cons_f(x0, cons_f(x1, cons_f(z0, z1)))) -> c4(F(encArg(x0), f(encArg(x1), f(encArg(z0), encArg(z1)))), ENCARG(x0), ENCARG(cons_f(x1, cons_f(z0, z1))))
   ENCARG(cons_f(x0, cons_f(a, x2))) -> c4(F(encArg(x0), f(a, encArg(x2))), ENCARG(x0), ENCARG(cons_f(a, x2)))
   ENCARG(cons_f(x0, cons_f(b, x2))) -> c4(F(encArg(x0), f(b, encArg(x2))), ENCARG(x0), ENCARG(cons_f(b, x2)))
   ENCARG(cons_f(x0, cons_f(c, x2))) -> c4(F(encArg(x0), f(c, encArg(x2))), ENCARG(x0), ENCARG(cons_f(c, x2)))
   ENCARG(cons_f(x0, cons_f(cons_f(z0, z1), x2))) -> c4(F(encArg(x0), f(f(encArg(z0), encArg(z1)), encArg(x2))), ENCARG(x0), ENCARG(cons_f(cons_f(z0, z1), x2)))
   ENCARG(cons_f(cons_f(z0, z1), cons_f(x1, x2))) -> c4(F(f(encArg(z0), encArg(z1)), f(encArg(x1), encArg(x2))), ENCARG(cons_f(z0, z1)), ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(a, cons_f(x1, x2))) -> c4(ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(b, cons_f(x1, x2))) -> c4(ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(c, cons_f(x1, x2))) -> c4(F(c, f(encArg(x1), encArg(x2))), ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(cons_f(x0, a), x2)) -> c4(F(f(encArg(x0), a), encArg(x2)), ENCARG(cons_f(x0, a)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, b), x2)) -> c4(F(f(encArg(x0), b), encArg(x2)), ENCARG(cons_f(x0, b)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, c), x2)) -> c4(F(f(encArg(x0), c), encArg(x2)), ENCARG(cons_f(x0, c)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, cons_f(z0, z1)), x2)) -> c4(F(f(encArg(x0), f(encArg(z0), encArg(z1))), encArg(x2)), ENCARG(cons_f(x0, cons_f(z0, z1))), ENCARG(x2))
   ENCARG(cons_f(cons_f(b, x1), x2)) -> c4(F(f(b, encArg(x1)), encArg(x2)), ENCARG(cons_f(b, x1)), ENCARG(x2))
   ENCARG(cons_f(cons_f(c, x1), x2)) -> c4(F(f(c, encArg(x1)), encArg(x2)), ENCARG(cons_f(c, x1)), ENCARG(x2))
   ENCARG(cons_f(cons_f(cons_f(z0, z1), x1), x2)) -> c4(F(f(f(encArg(z0), encArg(z1)), encArg(x1)), encArg(x2)), ENCARG(cons_f(cons_f(z0, z1), x1)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, x1), a)) -> c4(F(f(encArg(x0), encArg(x1)), a), ENCARG(cons_f(x0, x1)))
   ENCARG(cons_f(cons_f(x0, x1), b)) -> c4(F(f(encArg(x0), encArg(x1)), b), ENCARG(cons_f(x0, x1)))
   ENCARG(cons_f(cons_f(x0, x1), c)) -> c4(F(f(encArg(x0), encArg(x1)), c), ENCARG(cons_f(x0, x1)))
   ENCARG(cons_f(cons_f(a, x1), x2)) -> c4(ENCARG(cons_f(a, x1)), ENCARG(x2))
   ENCARG(cons_f(c, a)) -> c4(F(c, a))
   ENCARG(cons_f(c, b)) -> c4(F(c, b))
   ENCARG(cons_f(c, c)) -> c4(F(c, c))
   ENCODE_F(cons_f(z0, z1), a) -> c1(F(f(encArg(z0), encArg(z1)), a))
   ENCODE_F(cons_f(z0, z1), b) -> c1(F(f(encArg(z0), encArg(z1)), b))
   ENCODE_F(a, c) -> c1(F(a, c))
   ENCODE_F(b, c) -> c1(F(b, c))
   ENCODE_F(c, c) -> c1(F(c, c))
   ENCODE_F(cons_f(z0, z1), c) -> c1(F(f(encArg(z0), encArg(z1)), c))
S tuples:
   F(f(f(a, z0), z1), z2) -> c9(F(f(z0, z2), f(z1, z2)), F(z0, z2), F(z1, z2))
   F(f(b, z0), z1) -> c10
   F(c, z0) -> c11
K tuples:none
Defined Rule Symbols:   encArg_1, f_2

Defined Pair Symbols:   F_2, ENCARG_1, ENCODE_F_2

Compound Symbols:   c9_3, c10, c11, c4_1, c4_2, c1_1, c4_3


----------------------------------------

(89) CdtLeafRemovalProof (ComplexityIfPolyImplication)
Removed 1 leading nodes:
   ENCODE_F(c, c) -> c1(F(c, c))
Removed 2 trailing nodes:
   ENCODE_F(b, c) -> c1(F(b, c))
   ENCODE_F(a, c) -> c1(F(a, c))

----------------------------------------

(90)
Obligation:
Complexity Dependency Tuples Problem

Rules:
   encArg(a) -> a
   encArg(b) -> b
   encArg(c) -> c
   encArg(cons_f(z0, z1)) -> f(encArg(z0), encArg(z1))
   f(f(f(a, z0), z1), z2) -> f(f(z0, z2), f(z1, z2))
   f(f(b, z0), z1) -> z0
   f(c, z0) -> z0
Tuples:
   F(f(f(a, z0), z1), z2) -> c9(F(f(z0, z2), f(z1, z2)), F(z0, z2), F(z1, z2))
   F(f(b, z0), z1) -> c10
   F(c, z0) -> c11
   ENCARG(cons_f(a, x1)) -> c4(ENCARG(x1))
   ENCARG(cons_f(b, x1)) -> c4(ENCARG(x1))
   ENCARG(cons_f(c, x1)) -> c4(F(c, encArg(x1)), ENCARG(x1))
   ENCODE_F(x0, cons_f(z0, z1)) -> c1(F(encArg(x0), f(encArg(z0), encArg(z1))))
   ENCODE_F(c, x1) -> c1(F(c, encArg(x1)))
   ENCODE_F(cons_f(z0, z1), x1) -> c1(F(f(encArg(z0), encArg(z1)), encArg(x1)))
   ENCARG(cons_f(x0, cons_f(x1, a))) -> c4(F(encArg(x0), f(encArg(x1), a)), ENCARG(x0), ENCARG(cons_f(x1, a)))
   ENCARG(cons_f(x0, cons_f(x1, b))) -> c4(F(encArg(x0), f(encArg(x1), b)), ENCARG(x0), ENCARG(cons_f(x1, b)))
   ENCARG(cons_f(x0, cons_f(x1, c))) -> c4(F(encArg(x0), f(encArg(x1), c)), ENCARG(x0), ENCARG(cons_f(x1, c)))
   ENCARG(cons_f(x0, cons_f(x1, cons_f(z0, z1)))) -> c4(F(encArg(x0), f(encArg(x1), f(encArg(z0), encArg(z1)))), ENCARG(x0), ENCARG(cons_f(x1, cons_f(z0, z1))))
   ENCARG(cons_f(x0, cons_f(a, x2))) -> c4(F(encArg(x0), f(a, encArg(x2))), ENCARG(x0), ENCARG(cons_f(a, x2)))
   ENCARG(cons_f(x0, cons_f(b, x2))) -> c4(F(encArg(x0), f(b, encArg(x2))), ENCARG(x0), ENCARG(cons_f(b, x2)))
   ENCARG(cons_f(x0, cons_f(c, x2))) -> c4(F(encArg(x0), f(c, encArg(x2))), ENCARG(x0), ENCARG(cons_f(c, x2)))
   ENCARG(cons_f(x0, cons_f(cons_f(z0, z1), x2))) -> c4(F(encArg(x0), f(f(encArg(z0), encArg(z1)), encArg(x2))), ENCARG(x0), ENCARG(cons_f(cons_f(z0, z1), x2)))
   ENCARG(cons_f(cons_f(z0, z1), cons_f(x1, x2))) -> c4(F(f(encArg(z0), encArg(z1)), f(encArg(x1), encArg(x2))), ENCARG(cons_f(z0, z1)), ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(a, cons_f(x1, x2))) -> c4(ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(b, cons_f(x1, x2))) -> c4(ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(c, cons_f(x1, x2))) -> c4(F(c, f(encArg(x1), encArg(x2))), ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(cons_f(x0, a), x2)) -> c4(F(f(encArg(x0), a), encArg(x2)), ENCARG(cons_f(x0, a)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, b), x2)) -> c4(F(f(encArg(x0), b), encArg(x2)), ENCARG(cons_f(x0, b)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, c), x2)) -> c4(F(f(encArg(x0), c), encArg(x2)), ENCARG(cons_f(x0, c)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, cons_f(z0, z1)), x2)) -> c4(F(f(encArg(x0), f(encArg(z0), encArg(z1))), encArg(x2)), ENCARG(cons_f(x0, cons_f(z0, z1))), ENCARG(x2))
   ENCARG(cons_f(cons_f(b, x1), x2)) -> c4(F(f(b, encArg(x1)), encArg(x2)), ENCARG(cons_f(b, x1)), ENCARG(x2))
   ENCARG(cons_f(cons_f(c, x1), x2)) -> c4(F(f(c, encArg(x1)), encArg(x2)), ENCARG(cons_f(c, x1)), ENCARG(x2))
   ENCARG(cons_f(cons_f(cons_f(z0, z1), x1), x2)) -> c4(F(f(f(encArg(z0), encArg(z1)), encArg(x1)), encArg(x2)), ENCARG(cons_f(cons_f(z0, z1), x1)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, x1), a)) -> c4(F(f(encArg(x0), encArg(x1)), a), ENCARG(cons_f(x0, x1)))
   ENCARG(cons_f(cons_f(x0, x1), b)) -> c4(F(f(encArg(x0), encArg(x1)), b), ENCARG(cons_f(x0, x1)))
   ENCARG(cons_f(cons_f(x0, x1), c)) -> c4(F(f(encArg(x0), encArg(x1)), c), ENCARG(cons_f(x0, x1)))
   ENCARG(cons_f(cons_f(a, x1), x2)) -> c4(ENCARG(cons_f(a, x1)), ENCARG(x2))
   ENCARG(cons_f(c, a)) -> c4(F(c, a))
   ENCARG(cons_f(c, b)) -> c4(F(c, b))
   ENCARG(cons_f(c, c)) -> c4(F(c, c))
   ENCODE_F(cons_f(z0, z1), a) -> c1(F(f(encArg(z0), encArg(z1)), a))
   ENCODE_F(cons_f(z0, z1), b) -> c1(F(f(encArg(z0), encArg(z1)), b))
   ENCODE_F(cons_f(z0, z1), c) -> c1(F(f(encArg(z0), encArg(z1)), c))
S tuples:
   F(f(f(a, z0), z1), z2) -> c9(F(f(z0, z2), f(z1, z2)), F(z0, z2), F(z1, z2))
   F(f(b, z0), z1) -> c10
   F(c, z0) -> c11
K tuples:none
Defined Rule Symbols:   encArg_1, f_2

Defined Pair Symbols:   F_2, ENCARG_1, ENCODE_F_2

Compound Symbols:   c9_3, c10, c11, c4_1, c4_2, c1_1, c4_3


----------------------------------------

(91) CdtNarrowingProof (BOTH BOUNDS(ID, ID))
Use narrowing to replace ENCODE_F(x0, cons_f(z0, z1)) -> c1(F(encArg(x0), f(encArg(z0), encArg(z1)))) by 
   ENCODE_F(x0, cons_f(x1, a)) -> c1(F(encArg(x0), f(encArg(x1), a)))
   ENCODE_F(x0, cons_f(x1, b)) -> c1(F(encArg(x0), f(encArg(x1), b)))
   ENCODE_F(x0, cons_f(x1, c)) -> c1(F(encArg(x0), f(encArg(x1), c)))
   ENCODE_F(x0, cons_f(x1, cons_f(z0, z1))) -> c1(F(encArg(x0), f(encArg(x1), f(encArg(z0), encArg(z1)))))
   ENCODE_F(x0, cons_f(a, x2)) -> c1(F(encArg(x0), f(a, encArg(x2))))
   ENCODE_F(x0, cons_f(b, x2)) -> c1(F(encArg(x0), f(b, encArg(x2))))
   ENCODE_F(x0, cons_f(c, x2)) -> c1(F(encArg(x0), f(c, encArg(x2))))
   ENCODE_F(x0, cons_f(cons_f(z0, z1), x2)) -> c1(F(encArg(x0), f(f(encArg(z0), encArg(z1)), encArg(x2))))
   ENCODE_F(a, cons_f(x1, x2)) -> c1(F(a, f(encArg(x1), encArg(x2))))
   ENCODE_F(b, cons_f(x1, x2)) -> c1(F(b, f(encArg(x1), encArg(x2))))
   ENCODE_F(c, cons_f(x1, x2)) -> c1(F(c, f(encArg(x1), encArg(x2))))
   ENCODE_F(cons_f(z0, z1), cons_f(x1, x2)) -> c1(F(f(encArg(z0), encArg(z1)), f(encArg(x1), encArg(x2))))

----------------------------------------

(92)
Obligation:
Complexity Dependency Tuples Problem

Rules:
   encArg(a) -> a
   encArg(b) -> b
   encArg(c) -> c
   encArg(cons_f(z0, z1)) -> f(encArg(z0), encArg(z1))
   f(f(f(a, z0), z1), z2) -> f(f(z0, z2), f(z1, z2))
   f(f(b, z0), z1) -> z0
   f(c, z0) -> z0
Tuples:
   F(f(f(a, z0), z1), z2) -> c9(F(f(z0, z2), f(z1, z2)), F(z0, z2), F(z1, z2))
   F(f(b, z0), z1) -> c10
   F(c, z0) -> c11
   ENCARG(cons_f(a, x1)) -> c4(ENCARG(x1))
   ENCARG(cons_f(b, x1)) -> c4(ENCARG(x1))
   ENCARG(cons_f(c, x1)) -> c4(F(c, encArg(x1)), ENCARG(x1))
   ENCODE_F(c, x1) -> c1(F(c, encArg(x1)))
   ENCODE_F(cons_f(z0, z1), x1) -> c1(F(f(encArg(z0), encArg(z1)), encArg(x1)))
   ENCARG(cons_f(x0, cons_f(x1, a))) -> c4(F(encArg(x0), f(encArg(x1), a)), ENCARG(x0), ENCARG(cons_f(x1, a)))
   ENCARG(cons_f(x0, cons_f(x1, b))) -> c4(F(encArg(x0), f(encArg(x1), b)), ENCARG(x0), ENCARG(cons_f(x1, b)))
   ENCARG(cons_f(x0, cons_f(x1, c))) -> c4(F(encArg(x0), f(encArg(x1), c)), ENCARG(x0), ENCARG(cons_f(x1, c)))
   ENCARG(cons_f(x0, cons_f(x1, cons_f(z0, z1)))) -> c4(F(encArg(x0), f(encArg(x1), f(encArg(z0), encArg(z1)))), ENCARG(x0), ENCARG(cons_f(x1, cons_f(z0, z1))))
   ENCARG(cons_f(x0, cons_f(a, x2))) -> c4(F(encArg(x0), f(a, encArg(x2))), ENCARG(x0), ENCARG(cons_f(a, x2)))
   ENCARG(cons_f(x0, cons_f(b, x2))) -> c4(F(encArg(x0), f(b, encArg(x2))), ENCARG(x0), ENCARG(cons_f(b, x2)))
   ENCARG(cons_f(x0, cons_f(c, x2))) -> c4(F(encArg(x0), f(c, encArg(x2))), ENCARG(x0), ENCARG(cons_f(c, x2)))
   ENCARG(cons_f(x0, cons_f(cons_f(z0, z1), x2))) -> c4(F(encArg(x0), f(f(encArg(z0), encArg(z1)), encArg(x2))), ENCARG(x0), ENCARG(cons_f(cons_f(z0, z1), x2)))
   ENCARG(cons_f(cons_f(z0, z1), cons_f(x1, x2))) -> c4(F(f(encArg(z0), encArg(z1)), f(encArg(x1), encArg(x2))), ENCARG(cons_f(z0, z1)), ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(a, cons_f(x1, x2))) -> c4(ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(b, cons_f(x1, x2))) -> c4(ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(c, cons_f(x1, x2))) -> c4(F(c, f(encArg(x1), encArg(x2))), ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(cons_f(x0, a), x2)) -> c4(F(f(encArg(x0), a), encArg(x2)), ENCARG(cons_f(x0, a)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, b), x2)) -> c4(F(f(encArg(x0), b), encArg(x2)), ENCARG(cons_f(x0, b)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, c), x2)) -> c4(F(f(encArg(x0), c), encArg(x2)), ENCARG(cons_f(x0, c)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, cons_f(z0, z1)), x2)) -> c4(F(f(encArg(x0), f(encArg(z0), encArg(z1))), encArg(x2)), ENCARG(cons_f(x0, cons_f(z0, z1))), ENCARG(x2))
   ENCARG(cons_f(cons_f(b, x1), x2)) -> c4(F(f(b, encArg(x1)), encArg(x2)), ENCARG(cons_f(b, x1)), ENCARG(x2))
   ENCARG(cons_f(cons_f(c, x1), x2)) -> c4(F(f(c, encArg(x1)), encArg(x2)), ENCARG(cons_f(c, x1)), ENCARG(x2))
   ENCARG(cons_f(cons_f(cons_f(z0, z1), x1), x2)) -> c4(F(f(f(encArg(z0), encArg(z1)), encArg(x1)), encArg(x2)), ENCARG(cons_f(cons_f(z0, z1), x1)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, x1), a)) -> c4(F(f(encArg(x0), encArg(x1)), a), ENCARG(cons_f(x0, x1)))
   ENCARG(cons_f(cons_f(x0, x1), b)) -> c4(F(f(encArg(x0), encArg(x1)), b), ENCARG(cons_f(x0, x1)))
   ENCARG(cons_f(cons_f(x0, x1), c)) -> c4(F(f(encArg(x0), encArg(x1)), c), ENCARG(cons_f(x0, x1)))
   ENCARG(cons_f(cons_f(a, x1), x2)) -> c4(ENCARG(cons_f(a, x1)), ENCARG(x2))
   ENCARG(cons_f(c, a)) -> c4(F(c, a))
   ENCARG(cons_f(c, b)) -> c4(F(c, b))
   ENCARG(cons_f(c, c)) -> c4(F(c, c))
   ENCODE_F(cons_f(z0, z1), a) -> c1(F(f(encArg(z0), encArg(z1)), a))
   ENCODE_F(cons_f(z0, z1), b) -> c1(F(f(encArg(z0), encArg(z1)), b))
   ENCODE_F(cons_f(z0, z1), c) -> c1(F(f(encArg(z0), encArg(z1)), c))
   ENCODE_F(x0, cons_f(x1, a)) -> c1(F(encArg(x0), f(encArg(x1), a)))
   ENCODE_F(x0, cons_f(x1, b)) -> c1(F(encArg(x0), f(encArg(x1), b)))
   ENCODE_F(x0, cons_f(x1, c)) -> c1(F(encArg(x0), f(encArg(x1), c)))
   ENCODE_F(x0, cons_f(x1, cons_f(z0, z1))) -> c1(F(encArg(x0), f(encArg(x1), f(encArg(z0), encArg(z1)))))
   ENCODE_F(x0, cons_f(a, x2)) -> c1(F(encArg(x0), f(a, encArg(x2))))
   ENCODE_F(x0, cons_f(b, x2)) -> c1(F(encArg(x0), f(b, encArg(x2))))
   ENCODE_F(x0, cons_f(c, x2)) -> c1(F(encArg(x0), f(c, encArg(x2))))
   ENCODE_F(x0, cons_f(cons_f(z0, z1), x2)) -> c1(F(encArg(x0), f(f(encArg(z0), encArg(z1)), encArg(x2))))
   ENCODE_F(a, cons_f(x1, x2)) -> c1(F(a, f(encArg(x1), encArg(x2))))
   ENCODE_F(b, cons_f(x1, x2)) -> c1(F(b, f(encArg(x1), encArg(x2))))
   ENCODE_F(c, cons_f(x1, x2)) -> c1(F(c, f(encArg(x1), encArg(x2))))
   ENCODE_F(cons_f(z0, z1), cons_f(x1, x2)) -> c1(F(f(encArg(z0), encArg(z1)), f(encArg(x1), encArg(x2))))
S tuples:
   F(f(f(a, z0), z1), z2) -> c9(F(f(z0, z2), f(z1, z2)), F(z0, z2), F(z1, z2))
   F(f(b, z0), z1) -> c10
   F(c, z0) -> c11
K tuples:none
Defined Rule Symbols:   encArg_1, f_2

Defined Pair Symbols:   F_2, ENCARG_1, ENCODE_F_2

Compound Symbols:   c9_3, c10, c11, c4_1, c4_2, c1_1, c4_3


----------------------------------------

(93) CdtLeafRemovalProof (BOTH BOUNDS(ID, ID))
Removed 2 trailing nodes:
   ENCODE_F(b, cons_f(x1, x2)) -> c1(F(b, f(encArg(x1), encArg(x2))))
   ENCODE_F(a, cons_f(x1, x2)) -> c1(F(a, f(encArg(x1), encArg(x2))))

----------------------------------------

(94)
Obligation:
Complexity Dependency Tuples Problem

Rules:
   encArg(a) -> a
   encArg(b) -> b
   encArg(c) -> c
   encArg(cons_f(z0, z1)) -> f(encArg(z0), encArg(z1))
   f(f(f(a, z0), z1), z2) -> f(f(z0, z2), f(z1, z2))
   f(f(b, z0), z1) -> z0
   f(c, z0) -> z0
Tuples:
   F(f(f(a, z0), z1), z2) -> c9(F(f(z0, z2), f(z1, z2)), F(z0, z2), F(z1, z2))
   F(f(b, z0), z1) -> c10
   F(c, z0) -> c11
   ENCARG(cons_f(a, x1)) -> c4(ENCARG(x1))
   ENCARG(cons_f(b, x1)) -> c4(ENCARG(x1))
   ENCARG(cons_f(c, x1)) -> c4(F(c, encArg(x1)), ENCARG(x1))
   ENCODE_F(c, x1) -> c1(F(c, encArg(x1)))
   ENCODE_F(cons_f(z0, z1), x1) -> c1(F(f(encArg(z0), encArg(z1)), encArg(x1)))
   ENCARG(cons_f(x0, cons_f(x1, a))) -> c4(F(encArg(x0), f(encArg(x1), a)), ENCARG(x0), ENCARG(cons_f(x1, a)))
   ENCARG(cons_f(x0, cons_f(x1, b))) -> c4(F(encArg(x0), f(encArg(x1), b)), ENCARG(x0), ENCARG(cons_f(x1, b)))
   ENCARG(cons_f(x0, cons_f(x1, c))) -> c4(F(encArg(x0), f(encArg(x1), c)), ENCARG(x0), ENCARG(cons_f(x1, c)))
   ENCARG(cons_f(x0, cons_f(x1, cons_f(z0, z1)))) -> c4(F(encArg(x0), f(encArg(x1), f(encArg(z0), encArg(z1)))), ENCARG(x0), ENCARG(cons_f(x1, cons_f(z0, z1))))
   ENCARG(cons_f(x0, cons_f(a, x2))) -> c4(F(encArg(x0), f(a, encArg(x2))), ENCARG(x0), ENCARG(cons_f(a, x2)))
   ENCARG(cons_f(x0, cons_f(b, x2))) -> c4(F(encArg(x0), f(b, encArg(x2))), ENCARG(x0), ENCARG(cons_f(b, x2)))
   ENCARG(cons_f(x0, cons_f(c, x2))) -> c4(F(encArg(x0), f(c, encArg(x2))), ENCARG(x0), ENCARG(cons_f(c, x2)))
   ENCARG(cons_f(x0, cons_f(cons_f(z0, z1), x2))) -> c4(F(encArg(x0), f(f(encArg(z0), encArg(z1)), encArg(x2))), ENCARG(x0), ENCARG(cons_f(cons_f(z0, z1), x2)))
   ENCARG(cons_f(cons_f(z0, z1), cons_f(x1, x2))) -> c4(F(f(encArg(z0), encArg(z1)), f(encArg(x1), encArg(x2))), ENCARG(cons_f(z0, z1)), ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(a, cons_f(x1, x2))) -> c4(ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(b, cons_f(x1, x2))) -> c4(ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(c, cons_f(x1, x2))) -> c4(F(c, f(encArg(x1), encArg(x2))), ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(cons_f(x0, a), x2)) -> c4(F(f(encArg(x0), a), encArg(x2)), ENCARG(cons_f(x0, a)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, b), x2)) -> c4(F(f(encArg(x0), b), encArg(x2)), ENCARG(cons_f(x0, b)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, c), x2)) -> c4(F(f(encArg(x0), c), encArg(x2)), ENCARG(cons_f(x0, c)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, cons_f(z0, z1)), x2)) -> c4(F(f(encArg(x0), f(encArg(z0), encArg(z1))), encArg(x2)), ENCARG(cons_f(x0, cons_f(z0, z1))), ENCARG(x2))
   ENCARG(cons_f(cons_f(b, x1), x2)) -> c4(F(f(b, encArg(x1)), encArg(x2)), ENCARG(cons_f(b, x1)), ENCARG(x2))
   ENCARG(cons_f(cons_f(c, x1), x2)) -> c4(F(f(c, encArg(x1)), encArg(x2)), ENCARG(cons_f(c, x1)), ENCARG(x2))
   ENCARG(cons_f(cons_f(cons_f(z0, z1), x1), x2)) -> c4(F(f(f(encArg(z0), encArg(z1)), encArg(x1)), encArg(x2)), ENCARG(cons_f(cons_f(z0, z1), x1)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, x1), a)) -> c4(F(f(encArg(x0), encArg(x1)), a), ENCARG(cons_f(x0, x1)))
   ENCARG(cons_f(cons_f(x0, x1), b)) -> c4(F(f(encArg(x0), encArg(x1)), b), ENCARG(cons_f(x0, x1)))
   ENCARG(cons_f(cons_f(x0, x1), c)) -> c4(F(f(encArg(x0), encArg(x1)), c), ENCARG(cons_f(x0, x1)))
   ENCARG(cons_f(cons_f(a, x1), x2)) -> c4(ENCARG(cons_f(a, x1)), ENCARG(x2))
   ENCARG(cons_f(c, a)) -> c4(F(c, a))
   ENCARG(cons_f(c, b)) -> c4(F(c, b))
   ENCARG(cons_f(c, c)) -> c4(F(c, c))
   ENCODE_F(cons_f(z0, z1), a) -> c1(F(f(encArg(z0), encArg(z1)), a))
   ENCODE_F(cons_f(z0, z1), b) -> c1(F(f(encArg(z0), encArg(z1)), b))
   ENCODE_F(cons_f(z0, z1), c) -> c1(F(f(encArg(z0), encArg(z1)), c))
   ENCODE_F(x0, cons_f(x1, a)) -> c1(F(encArg(x0), f(encArg(x1), a)))
   ENCODE_F(x0, cons_f(x1, b)) -> c1(F(encArg(x0), f(encArg(x1), b)))
   ENCODE_F(x0, cons_f(x1, c)) -> c1(F(encArg(x0), f(encArg(x1), c)))
   ENCODE_F(x0, cons_f(x1, cons_f(z0, z1))) -> c1(F(encArg(x0), f(encArg(x1), f(encArg(z0), encArg(z1)))))
   ENCODE_F(x0, cons_f(a, x2)) -> c1(F(encArg(x0), f(a, encArg(x2))))
   ENCODE_F(x0, cons_f(b, x2)) -> c1(F(encArg(x0), f(b, encArg(x2))))
   ENCODE_F(x0, cons_f(c, x2)) -> c1(F(encArg(x0), f(c, encArg(x2))))
   ENCODE_F(x0, cons_f(cons_f(z0, z1), x2)) -> c1(F(encArg(x0), f(f(encArg(z0), encArg(z1)), encArg(x2))))
   ENCODE_F(c, cons_f(x1, x2)) -> c1(F(c, f(encArg(x1), encArg(x2))))
   ENCODE_F(cons_f(z0, z1), cons_f(x1, x2)) -> c1(F(f(encArg(z0), encArg(z1)), f(encArg(x1), encArg(x2))))
S tuples:
   F(f(f(a, z0), z1), z2) -> c9(F(f(z0, z2), f(z1, z2)), F(z0, z2), F(z1, z2))
   F(f(b, z0), z1) -> c10
   F(c, z0) -> c11
K tuples:none
Defined Rule Symbols:   encArg_1, f_2

Defined Pair Symbols:   F_2, ENCARG_1, ENCODE_F_2

Compound Symbols:   c9_3, c10, c11, c4_1, c4_2, c1_1, c4_3


----------------------------------------

(95) CdtNarrowingProof (BOTH BOUNDS(ID, ID))
Use narrowing to replace ENCODE_F(cons_f(z0, z1), x1) -> c1(F(f(encArg(z0), encArg(z1)), encArg(x1))) by 
   ENCODE_F(cons_f(x0, x1), a) -> c1(F(f(encArg(x0), encArg(x1)), a))
   ENCODE_F(cons_f(x0, x1), b) -> c1(F(f(encArg(x0), encArg(x1)), b))
   ENCODE_F(cons_f(x0, x1), c) -> c1(F(f(encArg(x0), encArg(x1)), c))
   ENCODE_F(cons_f(x0, x1), cons_f(z0, z1)) -> c1(F(f(encArg(x0), encArg(x1)), f(encArg(z0), encArg(z1))))
   ENCODE_F(cons_f(x0, a), x2) -> c1(F(f(encArg(x0), a), encArg(x2)))
   ENCODE_F(cons_f(x0, b), x2) -> c1(F(f(encArg(x0), b), encArg(x2)))
   ENCODE_F(cons_f(x0, c), x2) -> c1(F(f(encArg(x0), c), encArg(x2)))
   ENCODE_F(cons_f(x0, cons_f(z0, z1)), x2) -> c1(F(f(encArg(x0), f(encArg(z0), encArg(z1))), encArg(x2)))
   ENCODE_F(cons_f(a, x1), x2) -> c1(F(f(a, encArg(x1)), encArg(x2)))
   ENCODE_F(cons_f(b, x1), x2) -> c1(F(f(b, encArg(x1)), encArg(x2)))
   ENCODE_F(cons_f(c, x1), x2) -> c1(F(f(c, encArg(x1)), encArg(x2)))
   ENCODE_F(cons_f(cons_f(z0, z1), x1), x2) -> c1(F(f(f(encArg(z0), encArg(z1)), encArg(x1)), encArg(x2)))

----------------------------------------

(96)
Obligation:
Complexity Dependency Tuples Problem

Rules:
   encArg(a) -> a
   encArg(b) -> b
   encArg(c) -> c
   encArg(cons_f(z0, z1)) -> f(encArg(z0), encArg(z1))
   f(f(f(a, z0), z1), z2) -> f(f(z0, z2), f(z1, z2))
   f(f(b, z0), z1) -> z0
   f(c, z0) -> z0
Tuples:
   F(f(f(a, z0), z1), z2) -> c9(F(f(z0, z2), f(z1, z2)), F(z0, z2), F(z1, z2))
   F(f(b, z0), z1) -> c10
   F(c, z0) -> c11
   ENCARG(cons_f(a, x1)) -> c4(ENCARG(x1))
   ENCARG(cons_f(b, x1)) -> c4(ENCARG(x1))
   ENCARG(cons_f(c, x1)) -> c4(F(c, encArg(x1)), ENCARG(x1))
   ENCODE_F(c, x1) -> c1(F(c, encArg(x1)))
   ENCARG(cons_f(x0, cons_f(x1, a))) -> c4(F(encArg(x0), f(encArg(x1), a)), ENCARG(x0), ENCARG(cons_f(x1, a)))
   ENCARG(cons_f(x0, cons_f(x1, b))) -> c4(F(encArg(x0), f(encArg(x1), b)), ENCARG(x0), ENCARG(cons_f(x1, b)))
   ENCARG(cons_f(x0, cons_f(x1, c))) -> c4(F(encArg(x0), f(encArg(x1), c)), ENCARG(x0), ENCARG(cons_f(x1, c)))
   ENCARG(cons_f(x0, cons_f(x1, cons_f(z0, z1)))) -> c4(F(encArg(x0), f(encArg(x1), f(encArg(z0), encArg(z1)))), ENCARG(x0), ENCARG(cons_f(x1, cons_f(z0, z1))))
   ENCARG(cons_f(x0, cons_f(a, x2))) -> c4(F(encArg(x0), f(a, encArg(x2))), ENCARG(x0), ENCARG(cons_f(a, x2)))
   ENCARG(cons_f(x0, cons_f(b, x2))) -> c4(F(encArg(x0), f(b, encArg(x2))), ENCARG(x0), ENCARG(cons_f(b, x2)))
   ENCARG(cons_f(x0, cons_f(c, x2))) -> c4(F(encArg(x0), f(c, encArg(x2))), ENCARG(x0), ENCARG(cons_f(c, x2)))
   ENCARG(cons_f(x0, cons_f(cons_f(z0, z1), x2))) -> c4(F(encArg(x0), f(f(encArg(z0), encArg(z1)), encArg(x2))), ENCARG(x0), ENCARG(cons_f(cons_f(z0, z1), x2)))
   ENCARG(cons_f(cons_f(z0, z1), cons_f(x1, x2))) -> c4(F(f(encArg(z0), encArg(z1)), f(encArg(x1), encArg(x2))), ENCARG(cons_f(z0, z1)), ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(a, cons_f(x1, x2))) -> c4(ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(b, cons_f(x1, x2))) -> c4(ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(c, cons_f(x1, x2))) -> c4(F(c, f(encArg(x1), encArg(x2))), ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(cons_f(x0, a), x2)) -> c4(F(f(encArg(x0), a), encArg(x2)), ENCARG(cons_f(x0, a)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, b), x2)) -> c4(F(f(encArg(x0), b), encArg(x2)), ENCARG(cons_f(x0, b)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, c), x2)) -> c4(F(f(encArg(x0), c), encArg(x2)), ENCARG(cons_f(x0, c)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, cons_f(z0, z1)), x2)) -> c4(F(f(encArg(x0), f(encArg(z0), encArg(z1))), encArg(x2)), ENCARG(cons_f(x0, cons_f(z0, z1))), ENCARG(x2))
   ENCARG(cons_f(cons_f(b, x1), x2)) -> c4(F(f(b, encArg(x1)), encArg(x2)), ENCARG(cons_f(b, x1)), ENCARG(x2))
   ENCARG(cons_f(cons_f(c, x1), x2)) -> c4(F(f(c, encArg(x1)), encArg(x2)), ENCARG(cons_f(c, x1)), ENCARG(x2))
   ENCARG(cons_f(cons_f(cons_f(z0, z1), x1), x2)) -> c4(F(f(f(encArg(z0), encArg(z1)), encArg(x1)), encArg(x2)), ENCARG(cons_f(cons_f(z0, z1), x1)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, x1), a)) -> c4(F(f(encArg(x0), encArg(x1)), a), ENCARG(cons_f(x0, x1)))
   ENCARG(cons_f(cons_f(x0, x1), b)) -> c4(F(f(encArg(x0), encArg(x1)), b), ENCARG(cons_f(x0, x1)))
   ENCARG(cons_f(cons_f(x0, x1), c)) -> c4(F(f(encArg(x0), encArg(x1)), c), ENCARG(cons_f(x0, x1)))
   ENCARG(cons_f(cons_f(a, x1), x2)) -> c4(ENCARG(cons_f(a, x1)), ENCARG(x2))
   ENCARG(cons_f(c, a)) -> c4(F(c, a))
   ENCARG(cons_f(c, b)) -> c4(F(c, b))
   ENCARG(cons_f(c, c)) -> c4(F(c, c))
   ENCODE_F(cons_f(z0, z1), a) -> c1(F(f(encArg(z0), encArg(z1)), a))
   ENCODE_F(cons_f(z0, z1), b) -> c1(F(f(encArg(z0), encArg(z1)), b))
   ENCODE_F(cons_f(z0, z1), c) -> c1(F(f(encArg(z0), encArg(z1)), c))
   ENCODE_F(x0, cons_f(x1, a)) -> c1(F(encArg(x0), f(encArg(x1), a)))
   ENCODE_F(x0, cons_f(x1, b)) -> c1(F(encArg(x0), f(encArg(x1), b)))
   ENCODE_F(x0, cons_f(x1, c)) -> c1(F(encArg(x0), f(encArg(x1), c)))
   ENCODE_F(x0, cons_f(x1, cons_f(z0, z1))) -> c1(F(encArg(x0), f(encArg(x1), f(encArg(z0), encArg(z1)))))
   ENCODE_F(x0, cons_f(a, x2)) -> c1(F(encArg(x0), f(a, encArg(x2))))
   ENCODE_F(x0, cons_f(b, x2)) -> c1(F(encArg(x0), f(b, encArg(x2))))
   ENCODE_F(x0, cons_f(c, x2)) -> c1(F(encArg(x0), f(c, encArg(x2))))
   ENCODE_F(x0, cons_f(cons_f(z0, z1), x2)) -> c1(F(encArg(x0), f(f(encArg(z0), encArg(z1)), encArg(x2))))
   ENCODE_F(c, cons_f(x1, x2)) -> c1(F(c, f(encArg(x1), encArg(x2))))
   ENCODE_F(cons_f(z0, z1), cons_f(x1, x2)) -> c1(F(f(encArg(z0), encArg(z1)), f(encArg(x1), encArg(x2))))
   ENCODE_F(cons_f(x0, a), x2) -> c1(F(f(encArg(x0), a), encArg(x2)))
   ENCODE_F(cons_f(x0, b), x2) -> c1(F(f(encArg(x0), b), encArg(x2)))
   ENCODE_F(cons_f(x0, c), x2) -> c1(F(f(encArg(x0), c), encArg(x2)))
   ENCODE_F(cons_f(x0, cons_f(z0, z1)), x2) -> c1(F(f(encArg(x0), f(encArg(z0), encArg(z1))), encArg(x2)))
   ENCODE_F(cons_f(a, x1), x2) -> c1(F(f(a, encArg(x1)), encArg(x2)))
   ENCODE_F(cons_f(b, x1), x2) -> c1(F(f(b, encArg(x1)), encArg(x2)))
   ENCODE_F(cons_f(c, x1), x2) -> c1(F(f(c, encArg(x1)), encArg(x2)))
   ENCODE_F(cons_f(cons_f(z0, z1), x1), x2) -> c1(F(f(f(encArg(z0), encArg(z1)), encArg(x1)), encArg(x2)))
S tuples:
   F(f(f(a, z0), z1), z2) -> c9(F(f(z0, z2), f(z1, z2)), F(z0, z2), F(z1, z2))
   F(f(b, z0), z1) -> c10
   F(c, z0) -> c11
K tuples:none
Defined Rule Symbols:   encArg_1, f_2

Defined Pair Symbols:   F_2, ENCARG_1, ENCODE_F_2

Compound Symbols:   c9_3, c10, c11, c4_1, c4_2, c1_1, c4_3


----------------------------------------

(97) CdtLeafRemovalProof (BOTH BOUNDS(ID, ID))
Removed 1 trailing nodes:
   ENCODE_F(cons_f(a, x1), x2) -> c1(F(f(a, encArg(x1)), encArg(x2)))

----------------------------------------

(98)
Obligation:
Complexity Dependency Tuples Problem

Rules:
   encArg(a) -> a
   encArg(b) -> b
   encArg(c) -> c
   encArg(cons_f(z0, z1)) -> f(encArg(z0), encArg(z1))
   f(f(f(a, z0), z1), z2) -> f(f(z0, z2), f(z1, z2))
   f(f(b, z0), z1) -> z0
   f(c, z0) -> z0
Tuples:
   F(f(f(a, z0), z1), z2) -> c9(F(f(z0, z2), f(z1, z2)), F(z0, z2), F(z1, z2))
   F(f(b, z0), z1) -> c10
   F(c, z0) -> c11
   ENCARG(cons_f(a, x1)) -> c4(ENCARG(x1))
   ENCARG(cons_f(b, x1)) -> c4(ENCARG(x1))
   ENCARG(cons_f(c, x1)) -> c4(F(c, encArg(x1)), ENCARG(x1))
   ENCODE_F(c, x1) -> c1(F(c, encArg(x1)))
   ENCARG(cons_f(x0, cons_f(x1, a))) -> c4(F(encArg(x0), f(encArg(x1), a)), ENCARG(x0), ENCARG(cons_f(x1, a)))
   ENCARG(cons_f(x0, cons_f(x1, b))) -> c4(F(encArg(x0), f(encArg(x1), b)), ENCARG(x0), ENCARG(cons_f(x1, b)))
   ENCARG(cons_f(x0, cons_f(x1, c))) -> c4(F(encArg(x0), f(encArg(x1), c)), ENCARG(x0), ENCARG(cons_f(x1, c)))
   ENCARG(cons_f(x0, cons_f(x1, cons_f(z0, z1)))) -> c4(F(encArg(x0), f(encArg(x1), f(encArg(z0), encArg(z1)))), ENCARG(x0), ENCARG(cons_f(x1, cons_f(z0, z1))))
   ENCARG(cons_f(x0, cons_f(a, x2))) -> c4(F(encArg(x0), f(a, encArg(x2))), ENCARG(x0), ENCARG(cons_f(a, x2)))
   ENCARG(cons_f(x0, cons_f(b, x2))) -> c4(F(encArg(x0), f(b, encArg(x2))), ENCARG(x0), ENCARG(cons_f(b, x2)))
   ENCARG(cons_f(x0, cons_f(c, x2))) -> c4(F(encArg(x0), f(c, encArg(x2))), ENCARG(x0), ENCARG(cons_f(c, x2)))
   ENCARG(cons_f(x0, cons_f(cons_f(z0, z1), x2))) -> c4(F(encArg(x0), f(f(encArg(z0), encArg(z1)), encArg(x2))), ENCARG(x0), ENCARG(cons_f(cons_f(z0, z1), x2)))
   ENCARG(cons_f(cons_f(z0, z1), cons_f(x1, x2))) -> c4(F(f(encArg(z0), encArg(z1)), f(encArg(x1), encArg(x2))), ENCARG(cons_f(z0, z1)), ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(a, cons_f(x1, x2))) -> c4(ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(b, cons_f(x1, x2))) -> c4(ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(c, cons_f(x1, x2))) -> c4(F(c, f(encArg(x1), encArg(x2))), ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(cons_f(x0, a), x2)) -> c4(F(f(encArg(x0), a), encArg(x2)), ENCARG(cons_f(x0, a)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, b), x2)) -> c4(F(f(encArg(x0), b), encArg(x2)), ENCARG(cons_f(x0, b)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, c), x2)) -> c4(F(f(encArg(x0), c), encArg(x2)), ENCARG(cons_f(x0, c)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, cons_f(z0, z1)), x2)) -> c4(F(f(encArg(x0), f(encArg(z0), encArg(z1))), encArg(x2)), ENCARG(cons_f(x0, cons_f(z0, z1))), ENCARG(x2))
   ENCARG(cons_f(cons_f(b, x1), x2)) -> c4(F(f(b, encArg(x1)), encArg(x2)), ENCARG(cons_f(b, x1)), ENCARG(x2))
   ENCARG(cons_f(cons_f(c, x1), x2)) -> c4(F(f(c, encArg(x1)), encArg(x2)), ENCARG(cons_f(c, x1)), ENCARG(x2))
   ENCARG(cons_f(cons_f(cons_f(z0, z1), x1), x2)) -> c4(F(f(f(encArg(z0), encArg(z1)), encArg(x1)), encArg(x2)), ENCARG(cons_f(cons_f(z0, z1), x1)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, x1), a)) -> c4(F(f(encArg(x0), encArg(x1)), a), ENCARG(cons_f(x0, x1)))
   ENCARG(cons_f(cons_f(x0, x1), b)) -> c4(F(f(encArg(x0), encArg(x1)), b), ENCARG(cons_f(x0, x1)))
   ENCARG(cons_f(cons_f(x0, x1), c)) -> c4(F(f(encArg(x0), encArg(x1)), c), ENCARG(cons_f(x0, x1)))
   ENCARG(cons_f(cons_f(a, x1), x2)) -> c4(ENCARG(cons_f(a, x1)), ENCARG(x2))
   ENCARG(cons_f(c, a)) -> c4(F(c, a))
   ENCARG(cons_f(c, b)) -> c4(F(c, b))
   ENCARG(cons_f(c, c)) -> c4(F(c, c))
   ENCODE_F(cons_f(z0, z1), a) -> c1(F(f(encArg(z0), encArg(z1)), a))
   ENCODE_F(cons_f(z0, z1), b) -> c1(F(f(encArg(z0), encArg(z1)), b))
   ENCODE_F(cons_f(z0, z1), c) -> c1(F(f(encArg(z0), encArg(z1)), c))
   ENCODE_F(x0, cons_f(x1, a)) -> c1(F(encArg(x0), f(encArg(x1), a)))
   ENCODE_F(x0, cons_f(x1, b)) -> c1(F(encArg(x0), f(encArg(x1), b)))
   ENCODE_F(x0, cons_f(x1, c)) -> c1(F(encArg(x0), f(encArg(x1), c)))
   ENCODE_F(x0, cons_f(x1, cons_f(z0, z1))) -> c1(F(encArg(x0), f(encArg(x1), f(encArg(z0), encArg(z1)))))
   ENCODE_F(x0, cons_f(a, x2)) -> c1(F(encArg(x0), f(a, encArg(x2))))
   ENCODE_F(x0, cons_f(b, x2)) -> c1(F(encArg(x0), f(b, encArg(x2))))
   ENCODE_F(x0, cons_f(c, x2)) -> c1(F(encArg(x0), f(c, encArg(x2))))
   ENCODE_F(x0, cons_f(cons_f(z0, z1), x2)) -> c1(F(encArg(x0), f(f(encArg(z0), encArg(z1)), encArg(x2))))
   ENCODE_F(c, cons_f(x1, x2)) -> c1(F(c, f(encArg(x1), encArg(x2))))
   ENCODE_F(cons_f(z0, z1), cons_f(x1, x2)) -> c1(F(f(encArg(z0), encArg(z1)), f(encArg(x1), encArg(x2))))
   ENCODE_F(cons_f(x0, a), x2) -> c1(F(f(encArg(x0), a), encArg(x2)))
   ENCODE_F(cons_f(x0, b), x2) -> c1(F(f(encArg(x0), b), encArg(x2)))
   ENCODE_F(cons_f(x0, c), x2) -> c1(F(f(encArg(x0), c), encArg(x2)))
   ENCODE_F(cons_f(x0, cons_f(z0, z1)), x2) -> c1(F(f(encArg(x0), f(encArg(z0), encArg(z1))), encArg(x2)))
   ENCODE_F(cons_f(b, x1), x2) -> c1(F(f(b, encArg(x1)), encArg(x2)))
   ENCODE_F(cons_f(c, x1), x2) -> c1(F(f(c, encArg(x1)), encArg(x2)))
   ENCODE_F(cons_f(cons_f(z0, z1), x1), x2) -> c1(F(f(f(encArg(z0), encArg(z1)), encArg(x1)), encArg(x2)))
S tuples:
   F(f(f(a, z0), z1), z2) -> c9(F(f(z0, z2), f(z1, z2)), F(z0, z2), F(z1, z2))
   F(f(b, z0), z1) -> c10
   F(c, z0) -> c11
K tuples:none
Defined Rule Symbols:   encArg_1, f_2

Defined Pair Symbols:   F_2, ENCARG_1, ENCODE_F_2

Compound Symbols:   c9_3, c10, c11, c4_1, c4_2, c1_1, c4_3


----------------------------------------

(99) CdtRewritingProof (BOTH BOUNDS(ID, ID))
Used rewriting to replace ENCARG(cons_f(x0, cons_f(c, x2))) -> c4(F(encArg(x0), f(c, encArg(x2))), ENCARG(x0), ENCARG(cons_f(c, x2))) by ENCARG(cons_f(z0, cons_f(c, z1))) -> c4(F(encArg(z0), encArg(z1)), ENCARG(z0), ENCARG(cons_f(c, z1)))
----------------------------------------

(100)
Obligation:
Complexity Dependency Tuples Problem

Rules:
   encArg(a) -> a
   encArg(b) -> b
   encArg(c) -> c
   encArg(cons_f(z0, z1)) -> f(encArg(z0), encArg(z1))
   f(f(f(a, z0), z1), z2) -> f(f(z0, z2), f(z1, z2))
   f(f(b, z0), z1) -> z0
   f(c, z0) -> z0
Tuples:
   F(f(f(a, z0), z1), z2) -> c9(F(f(z0, z2), f(z1, z2)), F(z0, z2), F(z1, z2))
   F(f(b, z0), z1) -> c10
   F(c, z0) -> c11
   ENCARG(cons_f(a, x1)) -> c4(ENCARG(x1))
   ENCARG(cons_f(b, x1)) -> c4(ENCARG(x1))
   ENCARG(cons_f(c, x1)) -> c4(F(c, encArg(x1)), ENCARG(x1))
   ENCODE_F(c, x1) -> c1(F(c, encArg(x1)))
   ENCARG(cons_f(x0, cons_f(x1, a))) -> c4(F(encArg(x0), f(encArg(x1), a)), ENCARG(x0), ENCARG(cons_f(x1, a)))
   ENCARG(cons_f(x0, cons_f(x1, b))) -> c4(F(encArg(x0), f(encArg(x1), b)), ENCARG(x0), ENCARG(cons_f(x1, b)))
   ENCARG(cons_f(x0, cons_f(x1, c))) -> c4(F(encArg(x0), f(encArg(x1), c)), ENCARG(x0), ENCARG(cons_f(x1, c)))
   ENCARG(cons_f(x0, cons_f(x1, cons_f(z0, z1)))) -> c4(F(encArg(x0), f(encArg(x1), f(encArg(z0), encArg(z1)))), ENCARG(x0), ENCARG(cons_f(x1, cons_f(z0, z1))))
   ENCARG(cons_f(x0, cons_f(a, x2))) -> c4(F(encArg(x0), f(a, encArg(x2))), ENCARG(x0), ENCARG(cons_f(a, x2)))
   ENCARG(cons_f(x0, cons_f(b, x2))) -> c4(F(encArg(x0), f(b, encArg(x2))), ENCARG(x0), ENCARG(cons_f(b, x2)))
   ENCARG(cons_f(x0, cons_f(cons_f(z0, z1), x2))) -> c4(F(encArg(x0), f(f(encArg(z0), encArg(z1)), encArg(x2))), ENCARG(x0), ENCARG(cons_f(cons_f(z0, z1), x2)))
   ENCARG(cons_f(cons_f(z0, z1), cons_f(x1, x2))) -> c4(F(f(encArg(z0), encArg(z1)), f(encArg(x1), encArg(x2))), ENCARG(cons_f(z0, z1)), ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(a, cons_f(x1, x2))) -> c4(ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(b, cons_f(x1, x2))) -> c4(ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(c, cons_f(x1, x2))) -> c4(F(c, f(encArg(x1), encArg(x2))), ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(cons_f(x0, a), x2)) -> c4(F(f(encArg(x0), a), encArg(x2)), ENCARG(cons_f(x0, a)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, b), x2)) -> c4(F(f(encArg(x0), b), encArg(x2)), ENCARG(cons_f(x0, b)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, c), x2)) -> c4(F(f(encArg(x0), c), encArg(x2)), ENCARG(cons_f(x0, c)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, cons_f(z0, z1)), x2)) -> c4(F(f(encArg(x0), f(encArg(z0), encArg(z1))), encArg(x2)), ENCARG(cons_f(x0, cons_f(z0, z1))), ENCARG(x2))
   ENCARG(cons_f(cons_f(b, x1), x2)) -> c4(F(f(b, encArg(x1)), encArg(x2)), ENCARG(cons_f(b, x1)), ENCARG(x2))
   ENCARG(cons_f(cons_f(c, x1), x2)) -> c4(F(f(c, encArg(x1)), encArg(x2)), ENCARG(cons_f(c, x1)), ENCARG(x2))
   ENCARG(cons_f(cons_f(cons_f(z0, z1), x1), x2)) -> c4(F(f(f(encArg(z0), encArg(z1)), encArg(x1)), encArg(x2)), ENCARG(cons_f(cons_f(z0, z1), x1)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, x1), a)) -> c4(F(f(encArg(x0), encArg(x1)), a), ENCARG(cons_f(x0, x1)))
   ENCARG(cons_f(cons_f(x0, x1), b)) -> c4(F(f(encArg(x0), encArg(x1)), b), ENCARG(cons_f(x0, x1)))
   ENCARG(cons_f(cons_f(x0, x1), c)) -> c4(F(f(encArg(x0), encArg(x1)), c), ENCARG(cons_f(x0, x1)))
   ENCARG(cons_f(cons_f(a, x1), x2)) -> c4(ENCARG(cons_f(a, x1)), ENCARG(x2))
   ENCARG(cons_f(c, a)) -> c4(F(c, a))
   ENCARG(cons_f(c, b)) -> c4(F(c, b))
   ENCARG(cons_f(c, c)) -> c4(F(c, c))
   ENCODE_F(cons_f(z0, z1), a) -> c1(F(f(encArg(z0), encArg(z1)), a))
   ENCODE_F(cons_f(z0, z1), b) -> c1(F(f(encArg(z0), encArg(z1)), b))
   ENCODE_F(cons_f(z0, z1), c) -> c1(F(f(encArg(z0), encArg(z1)), c))
   ENCODE_F(x0, cons_f(x1, a)) -> c1(F(encArg(x0), f(encArg(x1), a)))
   ENCODE_F(x0, cons_f(x1, b)) -> c1(F(encArg(x0), f(encArg(x1), b)))
   ENCODE_F(x0, cons_f(x1, c)) -> c1(F(encArg(x0), f(encArg(x1), c)))
   ENCODE_F(x0, cons_f(x1, cons_f(z0, z1))) -> c1(F(encArg(x0), f(encArg(x1), f(encArg(z0), encArg(z1)))))
   ENCODE_F(x0, cons_f(a, x2)) -> c1(F(encArg(x0), f(a, encArg(x2))))
   ENCODE_F(x0, cons_f(b, x2)) -> c1(F(encArg(x0), f(b, encArg(x2))))
   ENCODE_F(x0, cons_f(c, x2)) -> c1(F(encArg(x0), f(c, encArg(x2))))
   ENCODE_F(x0, cons_f(cons_f(z0, z1), x2)) -> c1(F(encArg(x0), f(f(encArg(z0), encArg(z1)), encArg(x2))))
   ENCODE_F(c, cons_f(x1, x2)) -> c1(F(c, f(encArg(x1), encArg(x2))))
   ENCODE_F(cons_f(z0, z1), cons_f(x1, x2)) -> c1(F(f(encArg(z0), encArg(z1)), f(encArg(x1), encArg(x2))))
   ENCODE_F(cons_f(x0, a), x2) -> c1(F(f(encArg(x0), a), encArg(x2)))
   ENCODE_F(cons_f(x0, b), x2) -> c1(F(f(encArg(x0), b), encArg(x2)))
   ENCODE_F(cons_f(x0, c), x2) -> c1(F(f(encArg(x0), c), encArg(x2)))
   ENCODE_F(cons_f(x0, cons_f(z0, z1)), x2) -> c1(F(f(encArg(x0), f(encArg(z0), encArg(z1))), encArg(x2)))
   ENCODE_F(cons_f(b, x1), x2) -> c1(F(f(b, encArg(x1)), encArg(x2)))
   ENCODE_F(cons_f(c, x1), x2) -> c1(F(f(c, encArg(x1)), encArg(x2)))
   ENCODE_F(cons_f(cons_f(z0, z1), x1), x2) -> c1(F(f(f(encArg(z0), encArg(z1)), encArg(x1)), encArg(x2)))
   ENCARG(cons_f(z0, cons_f(c, z1))) -> c4(F(encArg(z0), encArg(z1)), ENCARG(z0), ENCARG(cons_f(c, z1)))
S tuples:
   F(f(f(a, z0), z1), z2) -> c9(F(f(z0, z2), f(z1, z2)), F(z0, z2), F(z1, z2))
   F(f(b, z0), z1) -> c10
   F(c, z0) -> c11
K tuples:none
Defined Rule Symbols:   encArg_1, f_2

Defined Pair Symbols:   F_2, ENCARG_1, ENCODE_F_2

Compound Symbols:   c9_3, c10, c11, c4_1, c4_2, c1_1, c4_3


----------------------------------------

(101) CdtRewritingProof (BOTH BOUNDS(ID, ID))
Used rewriting to replace ENCARG(cons_f(cons_f(c, x1), x2)) -> c4(F(f(c, encArg(x1)), encArg(x2)), ENCARG(cons_f(c, x1)), ENCARG(x2)) by ENCARG(cons_f(cons_f(c, z0), z1)) -> c4(F(encArg(z0), encArg(z1)), ENCARG(cons_f(c, z0)), ENCARG(z1))
----------------------------------------

(102)
Obligation:
Complexity Dependency Tuples Problem

Rules:
   encArg(a) -> a
   encArg(b) -> b
   encArg(c) -> c
   encArg(cons_f(z0, z1)) -> f(encArg(z0), encArg(z1))
   f(f(f(a, z0), z1), z2) -> f(f(z0, z2), f(z1, z2))
   f(f(b, z0), z1) -> z0
   f(c, z0) -> z0
Tuples:
   F(f(f(a, z0), z1), z2) -> c9(F(f(z0, z2), f(z1, z2)), F(z0, z2), F(z1, z2))
   F(f(b, z0), z1) -> c10
   F(c, z0) -> c11
   ENCARG(cons_f(a, x1)) -> c4(ENCARG(x1))
   ENCARG(cons_f(b, x1)) -> c4(ENCARG(x1))
   ENCARG(cons_f(c, x1)) -> c4(F(c, encArg(x1)), ENCARG(x1))
   ENCODE_F(c, x1) -> c1(F(c, encArg(x1)))
   ENCARG(cons_f(x0, cons_f(x1, a))) -> c4(F(encArg(x0), f(encArg(x1), a)), ENCARG(x0), ENCARG(cons_f(x1, a)))
   ENCARG(cons_f(x0, cons_f(x1, b))) -> c4(F(encArg(x0), f(encArg(x1), b)), ENCARG(x0), ENCARG(cons_f(x1, b)))
   ENCARG(cons_f(x0, cons_f(x1, c))) -> c4(F(encArg(x0), f(encArg(x1), c)), ENCARG(x0), ENCARG(cons_f(x1, c)))
   ENCARG(cons_f(x0, cons_f(x1, cons_f(z0, z1)))) -> c4(F(encArg(x0), f(encArg(x1), f(encArg(z0), encArg(z1)))), ENCARG(x0), ENCARG(cons_f(x1, cons_f(z0, z1))))
   ENCARG(cons_f(x0, cons_f(a, x2))) -> c4(F(encArg(x0), f(a, encArg(x2))), ENCARG(x0), ENCARG(cons_f(a, x2)))
   ENCARG(cons_f(x0, cons_f(b, x2))) -> c4(F(encArg(x0), f(b, encArg(x2))), ENCARG(x0), ENCARG(cons_f(b, x2)))
   ENCARG(cons_f(x0, cons_f(cons_f(z0, z1), x2))) -> c4(F(encArg(x0), f(f(encArg(z0), encArg(z1)), encArg(x2))), ENCARG(x0), ENCARG(cons_f(cons_f(z0, z1), x2)))
   ENCARG(cons_f(cons_f(z0, z1), cons_f(x1, x2))) -> c4(F(f(encArg(z0), encArg(z1)), f(encArg(x1), encArg(x2))), ENCARG(cons_f(z0, z1)), ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(a, cons_f(x1, x2))) -> c4(ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(b, cons_f(x1, x2))) -> c4(ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(c, cons_f(x1, x2))) -> c4(F(c, f(encArg(x1), encArg(x2))), ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(cons_f(x0, a), x2)) -> c4(F(f(encArg(x0), a), encArg(x2)), ENCARG(cons_f(x0, a)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, b), x2)) -> c4(F(f(encArg(x0), b), encArg(x2)), ENCARG(cons_f(x0, b)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, c), x2)) -> c4(F(f(encArg(x0), c), encArg(x2)), ENCARG(cons_f(x0, c)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, cons_f(z0, z1)), x2)) -> c4(F(f(encArg(x0), f(encArg(z0), encArg(z1))), encArg(x2)), ENCARG(cons_f(x0, cons_f(z0, z1))), ENCARG(x2))
   ENCARG(cons_f(cons_f(b, x1), x2)) -> c4(F(f(b, encArg(x1)), encArg(x2)), ENCARG(cons_f(b, x1)), ENCARG(x2))
   ENCARG(cons_f(cons_f(cons_f(z0, z1), x1), x2)) -> c4(F(f(f(encArg(z0), encArg(z1)), encArg(x1)), encArg(x2)), ENCARG(cons_f(cons_f(z0, z1), x1)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, x1), a)) -> c4(F(f(encArg(x0), encArg(x1)), a), ENCARG(cons_f(x0, x1)))
   ENCARG(cons_f(cons_f(x0, x1), b)) -> c4(F(f(encArg(x0), encArg(x1)), b), ENCARG(cons_f(x0, x1)))
   ENCARG(cons_f(cons_f(x0, x1), c)) -> c4(F(f(encArg(x0), encArg(x1)), c), ENCARG(cons_f(x0, x1)))
   ENCARG(cons_f(cons_f(a, x1), x2)) -> c4(ENCARG(cons_f(a, x1)), ENCARG(x2))
   ENCARG(cons_f(c, a)) -> c4(F(c, a))
   ENCARG(cons_f(c, b)) -> c4(F(c, b))
   ENCARG(cons_f(c, c)) -> c4(F(c, c))
   ENCODE_F(cons_f(z0, z1), a) -> c1(F(f(encArg(z0), encArg(z1)), a))
   ENCODE_F(cons_f(z0, z1), b) -> c1(F(f(encArg(z0), encArg(z1)), b))
   ENCODE_F(cons_f(z0, z1), c) -> c1(F(f(encArg(z0), encArg(z1)), c))
   ENCODE_F(x0, cons_f(x1, a)) -> c1(F(encArg(x0), f(encArg(x1), a)))
   ENCODE_F(x0, cons_f(x1, b)) -> c1(F(encArg(x0), f(encArg(x1), b)))
   ENCODE_F(x0, cons_f(x1, c)) -> c1(F(encArg(x0), f(encArg(x1), c)))
   ENCODE_F(x0, cons_f(x1, cons_f(z0, z1))) -> c1(F(encArg(x0), f(encArg(x1), f(encArg(z0), encArg(z1)))))
   ENCODE_F(x0, cons_f(a, x2)) -> c1(F(encArg(x0), f(a, encArg(x2))))
   ENCODE_F(x0, cons_f(b, x2)) -> c1(F(encArg(x0), f(b, encArg(x2))))
   ENCODE_F(x0, cons_f(c, x2)) -> c1(F(encArg(x0), f(c, encArg(x2))))
   ENCODE_F(x0, cons_f(cons_f(z0, z1), x2)) -> c1(F(encArg(x0), f(f(encArg(z0), encArg(z1)), encArg(x2))))
   ENCODE_F(c, cons_f(x1, x2)) -> c1(F(c, f(encArg(x1), encArg(x2))))
   ENCODE_F(cons_f(z0, z1), cons_f(x1, x2)) -> c1(F(f(encArg(z0), encArg(z1)), f(encArg(x1), encArg(x2))))
   ENCODE_F(cons_f(x0, a), x2) -> c1(F(f(encArg(x0), a), encArg(x2)))
   ENCODE_F(cons_f(x0, b), x2) -> c1(F(f(encArg(x0), b), encArg(x2)))
   ENCODE_F(cons_f(x0, c), x2) -> c1(F(f(encArg(x0), c), encArg(x2)))
   ENCODE_F(cons_f(x0, cons_f(z0, z1)), x2) -> c1(F(f(encArg(x0), f(encArg(z0), encArg(z1))), encArg(x2)))
   ENCODE_F(cons_f(b, x1), x2) -> c1(F(f(b, encArg(x1)), encArg(x2)))
   ENCODE_F(cons_f(c, x1), x2) -> c1(F(f(c, encArg(x1)), encArg(x2)))
   ENCODE_F(cons_f(cons_f(z0, z1), x1), x2) -> c1(F(f(f(encArg(z0), encArg(z1)), encArg(x1)), encArg(x2)))
   ENCARG(cons_f(z0, cons_f(c, z1))) -> c4(F(encArg(z0), encArg(z1)), ENCARG(z0), ENCARG(cons_f(c, z1)))
   ENCARG(cons_f(cons_f(c, z0), z1)) -> c4(F(encArg(z0), encArg(z1)), ENCARG(cons_f(c, z0)), ENCARG(z1))
S tuples:
   F(f(f(a, z0), z1), z2) -> c9(F(f(z0, z2), f(z1, z2)), F(z0, z2), F(z1, z2))
   F(f(b, z0), z1) -> c10
   F(c, z0) -> c11
K tuples:none
Defined Rule Symbols:   encArg_1, f_2

Defined Pair Symbols:   F_2, ENCARG_1, ENCODE_F_2

Compound Symbols:   c9_3, c10, c11, c4_1, c4_2, c1_1, c4_3


----------------------------------------

(103) CdtRewritingProof (BOTH BOUNDS(ID, ID))
Used rewriting to replace ENCODE_F(x0, cons_f(c, x2)) -> c1(F(encArg(x0), f(c, encArg(x2)))) by ENCODE_F(z0, cons_f(c, z1)) -> c1(F(encArg(z0), encArg(z1)))
----------------------------------------

(104)
Obligation:
Complexity Dependency Tuples Problem

Rules:
   encArg(a) -> a
   encArg(b) -> b
   encArg(c) -> c
   encArg(cons_f(z0, z1)) -> f(encArg(z0), encArg(z1))
   f(f(f(a, z0), z1), z2) -> f(f(z0, z2), f(z1, z2))
   f(f(b, z0), z1) -> z0
   f(c, z0) -> z0
Tuples:
   F(f(f(a, z0), z1), z2) -> c9(F(f(z0, z2), f(z1, z2)), F(z0, z2), F(z1, z2))
   F(f(b, z0), z1) -> c10
   F(c, z0) -> c11
   ENCARG(cons_f(a, x1)) -> c4(ENCARG(x1))
   ENCARG(cons_f(b, x1)) -> c4(ENCARG(x1))
   ENCARG(cons_f(c, x1)) -> c4(F(c, encArg(x1)), ENCARG(x1))
   ENCODE_F(c, x1) -> c1(F(c, encArg(x1)))
   ENCARG(cons_f(x0, cons_f(x1, a))) -> c4(F(encArg(x0), f(encArg(x1), a)), ENCARG(x0), ENCARG(cons_f(x1, a)))
   ENCARG(cons_f(x0, cons_f(x1, b))) -> c4(F(encArg(x0), f(encArg(x1), b)), ENCARG(x0), ENCARG(cons_f(x1, b)))
   ENCARG(cons_f(x0, cons_f(x1, c))) -> c4(F(encArg(x0), f(encArg(x1), c)), ENCARG(x0), ENCARG(cons_f(x1, c)))
   ENCARG(cons_f(x0, cons_f(x1, cons_f(z0, z1)))) -> c4(F(encArg(x0), f(encArg(x1), f(encArg(z0), encArg(z1)))), ENCARG(x0), ENCARG(cons_f(x1, cons_f(z0, z1))))
   ENCARG(cons_f(x0, cons_f(a, x2))) -> c4(F(encArg(x0), f(a, encArg(x2))), ENCARG(x0), ENCARG(cons_f(a, x2)))
   ENCARG(cons_f(x0, cons_f(b, x2))) -> c4(F(encArg(x0), f(b, encArg(x2))), ENCARG(x0), ENCARG(cons_f(b, x2)))
   ENCARG(cons_f(x0, cons_f(cons_f(z0, z1), x2))) -> c4(F(encArg(x0), f(f(encArg(z0), encArg(z1)), encArg(x2))), ENCARG(x0), ENCARG(cons_f(cons_f(z0, z1), x2)))
   ENCARG(cons_f(cons_f(z0, z1), cons_f(x1, x2))) -> c4(F(f(encArg(z0), encArg(z1)), f(encArg(x1), encArg(x2))), ENCARG(cons_f(z0, z1)), ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(a, cons_f(x1, x2))) -> c4(ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(b, cons_f(x1, x2))) -> c4(ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(c, cons_f(x1, x2))) -> c4(F(c, f(encArg(x1), encArg(x2))), ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(cons_f(x0, a), x2)) -> c4(F(f(encArg(x0), a), encArg(x2)), ENCARG(cons_f(x0, a)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, b), x2)) -> c4(F(f(encArg(x0), b), encArg(x2)), ENCARG(cons_f(x0, b)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, c), x2)) -> c4(F(f(encArg(x0), c), encArg(x2)), ENCARG(cons_f(x0, c)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, cons_f(z0, z1)), x2)) -> c4(F(f(encArg(x0), f(encArg(z0), encArg(z1))), encArg(x2)), ENCARG(cons_f(x0, cons_f(z0, z1))), ENCARG(x2))
   ENCARG(cons_f(cons_f(b, x1), x2)) -> c4(F(f(b, encArg(x1)), encArg(x2)), ENCARG(cons_f(b, x1)), ENCARG(x2))
   ENCARG(cons_f(cons_f(cons_f(z0, z1), x1), x2)) -> c4(F(f(f(encArg(z0), encArg(z1)), encArg(x1)), encArg(x2)), ENCARG(cons_f(cons_f(z0, z1), x1)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, x1), a)) -> c4(F(f(encArg(x0), encArg(x1)), a), ENCARG(cons_f(x0, x1)))
   ENCARG(cons_f(cons_f(x0, x1), b)) -> c4(F(f(encArg(x0), encArg(x1)), b), ENCARG(cons_f(x0, x1)))
   ENCARG(cons_f(cons_f(x0, x1), c)) -> c4(F(f(encArg(x0), encArg(x1)), c), ENCARG(cons_f(x0, x1)))
   ENCARG(cons_f(cons_f(a, x1), x2)) -> c4(ENCARG(cons_f(a, x1)), ENCARG(x2))
   ENCARG(cons_f(c, a)) -> c4(F(c, a))
   ENCARG(cons_f(c, b)) -> c4(F(c, b))
   ENCARG(cons_f(c, c)) -> c4(F(c, c))
   ENCODE_F(cons_f(z0, z1), a) -> c1(F(f(encArg(z0), encArg(z1)), a))
   ENCODE_F(cons_f(z0, z1), b) -> c1(F(f(encArg(z0), encArg(z1)), b))
   ENCODE_F(cons_f(z0, z1), c) -> c1(F(f(encArg(z0), encArg(z1)), c))
   ENCODE_F(x0, cons_f(x1, a)) -> c1(F(encArg(x0), f(encArg(x1), a)))
   ENCODE_F(x0, cons_f(x1, b)) -> c1(F(encArg(x0), f(encArg(x1), b)))
   ENCODE_F(x0, cons_f(x1, c)) -> c1(F(encArg(x0), f(encArg(x1), c)))
   ENCODE_F(x0, cons_f(x1, cons_f(z0, z1))) -> c1(F(encArg(x0), f(encArg(x1), f(encArg(z0), encArg(z1)))))
   ENCODE_F(x0, cons_f(a, x2)) -> c1(F(encArg(x0), f(a, encArg(x2))))
   ENCODE_F(x0, cons_f(b, x2)) -> c1(F(encArg(x0), f(b, encArg(x2))))
   ENCODE_F(x0, cons_f(cons_f(z0, z1), x2)) -> c1(F(encArg(x0), f(f(encArg(z0), encArg(z1)), encArg(x2))))
   ENCODE_F(c, cons_f(x1, x2)) -> c1(F(c, f(encArg(x1), encArg(x2))))
   ENCODE_F(cons_f(z0, z1), cons_f(x1, x2)) -> c1(F(f(encArg(z0), encArg(z1)), f(encArg(x1), encArg(x2))))
   ENCODE_F(cons_f(x0, a), x2) -> c1(F(f(encArg(x0), a), encArg(x2)))
   ENCODE_F(cons_f(x0, b), x2) -> c1(F(f(encArg(x0), b), encArg(x2)))
   ENCODE_F(cons_f(x0, c), x2) -> c1(F(f(encArg(x0), c), encArg(x2)))
   ENCODE_F(cons_f(x0, cons_f(z0, z1)), x2) -> c1(F(f(encArg(x0), f(encArg(z0), encArg(z1))), encArg(x2)))
   ENCODE_F(cons_f(b, x1), x2) -> c1(F(f(b, encArg(x1)), encArg(x2)))
   ENCODE_F(cons_f(c, x1), x2) -> c1(F(f(c, encArg(x1)), encArg(x2)))
   ENCODE_F(cons_f(cons_f(z0, z1), x1), x2) -> c1(F(f(f(encArg(z0), encArg(z1)), encArg(x1)), encArg(x2)))
   ENCARG(cons_f(z0, cons_f(c, z1))) -> c4(F(encArg(z0), encArg(z1)), ENCARG(z0), ENCARG(cons_f(c, z1)))
   ENCARG(cons_f(cons_f(c, z0), z1)) -> c4(F(encArg(z0), encArg(z1)), ENCARG(cons_f(c, z0)), ENCARG(z1))
   ENCODE_F(z0, cons_f(c, z1)) -> c1(F(encArg(z0), encArg(z1)))
S tuples:
   F(f(f(a, z0), z1), z2) -> c9(F(f(z0, z2), f(z1, z2)), F(z0, z2), F(z1, z2))
   F(f(b, z0), z1) -> c10
   F(c, z0) -> c11
K tuples:none
Defined Rule Symbols:   encArg_1, f_2

Defined Pair Symbols:   F_2, ENCARG_1, ENCODE_F_2

Compound Symbols:   c9_3, c10, c11, c4_1, c4_2, c1_1, c4_3


----------------------------------------

(105) CdtRewritingProof (BOTH BOUNDS(ID, ID))
Used rewriting to replace ENCODE_F(cons_f(c, x1), x2) -> c1(F(f(c, encArg(x1)), encArg(x2))) by ENCODE_F(cons_f(c, z0), z1) -> c1(F(encArg(z0), encArg(z1)))
----------------------------------------

(106)
Obligation:
Complexity Dependency Tuples Problem

Rules:
   encArg(a) -> a
   encArg(b) -> b
   encArg(c) -> c
   encArg(cons_f(z0, z1)) -> f(encArg(z0), encArg(z1))
   f(f(f(a, z0), z1), z2) -> f(f(z0, z2), f(z1, z2))
   f(f(b, z0), z1) -> z0
   f(c, z0) -> z0
Tuples:
   F(f(f(a, z0), z1), z2) -> c9(F(f(z0, z2), f(z1, z2)), F(z0, z2), F(z1, z2))
   F(f(b, z0), z1) -> c10
   F(c, z0) -> c11
   ENCARG(cons_f(a, x1)) -> c4(ENCARG(x1))
   ENCARG(cons_f(b, x1)) -> c4(ENCARG(x1))
   ENCARG(cons_f(c, x1)) -> c4(F(c, encArg(x1)), ENCARG(x1))
   ENCODE_F(c, x1) -> c1(F(c, encArg(x1)))
   ENCARG(cons_f(x0, cons_f(x1, a))) -> c4(F(encArg(x0), f(encArg(x1), a)), ENCARG(x0), ENCARG(cons_f(x1, a)))
   ENCARG(cons_f(x0, cons_f(x1, b))) -> c4(F(encArg(x0), f(encArg(x1), b)), ENCARG(x0), ENCARG(cons_f(x1, b)))
   ENCARG(cons_f(x0, cons_f(x1, c))) -> c4(F(encArg(x0), f(encArg(x1), c)), ENCARG(x0), ENCARG(cons_f(x1, c)))
   ENCARG(cons_f(x0, cons_f(x1, cons_f(z0, z1)))) -> c4(F(encArg(x0), f(encArg(x1), f(encArg(z0), encArg(z1)))), ENCARG(x0), ENCARG(cons_f(x1, cons_f(z0, z1))))
   ENCARG(cons_f(x0, cons_f(a, x2))) -> c4(F(encArg(x0), f(a, encArg(x2))), ENCARG(x0), ENCARG(cons_f(a, x2)))
   ENCARG(cons_f(x0, cons_f(b, x2))) -> c4(F(encArg(x0), f(b, encArg(x2))), ENCARG(x0), ENCARG(cons_f(b, x2)))
   ENCARG(cons_f(x0, cons_f(cons_f(z0, z1), x2))) -> c4(F(encArg(x0), f(f(encArg(z0), encArg(z1)), encArg(x2))), ENCARG(x0), ENCARG(cons_f(cons_f(z0, z1), x2)))
   ENCARG(cons_f(cons_f(z0, z1), cons_f(x1, x2))) -> c4(F(f(encArg(z0), encArg(z1)), f(encArg(x1), encArg(x2))), ENCARG(cons_f(z0, z1)), ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(a, cons_f(x1, x2))) -> c4(ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(b, cons_f(x1, x2))) -> c4(ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(c, cons_f(x1, x2))) -> c4(F(c, f(encArg(x1), encArg(x2))), ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(cons_f(x0, a), x2)) -> c4(F(f(encArg(x0), a), encArg(x2)), ENCARG(cons_f(x0, a)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, b), x2)) -> c4(F(f(encArg(x0), b), encArg(x2)), ENCARG(cons_f(x0, b)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, c), x2)) -> c4(F(f(encArg(x0), c), encArg(x2)), ENCARG(cons_f(x0, c)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, cons_f(z0, z1)), x2)) -> c4(F(f(encArg(x0), f(encArg(z0), encArg(z1))), encArg(x2)), ENCARG(cons_f(x0, cons_f(z0, z1))), ENCARG(x2))
   ENCARG(cons_f(cons_f(b, x1), x2)) -> c4(F(f(b, encArg(x1)), encArg(x2)), ENCARG(cons_f(b, x1)), ENCARG(x2))
   ENCARG(cons_f(cons_f(cons_f(z0, z1), x1), x2)) -> c4(F(f(f(encArg(z0), encArg(z1)), encArg(x1)), encArg(x2)), ENCARG(cons_f(cons_f(z0, z1), x1)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, x1), a)) -> c4(F(f(encArg(x0), encArg(x1)), a), ENCARG(cons_f(x0, x1)))
   ENCARG(cons_f(cons_f(x0, x1), b)) -> c4(F(f(encArg(x0), encArg(x1)), b), ENCARG(cons_f(x0, x1)))
   ENCARG(cons_f(cons_f(x0, x1), c)) -> c4(F(f(encArg(x0), encArg(x1)), c), ENCARG(cons_f(x0, x1)))
   ENCARG(cons_f(cons_f(a, x1), x2)) -> c4(ENCARG(cons_f(a, x1)), ENCARG(x2))
   ENCARG(cons_f(c, a)) -> c4(F(c, a))
   ENCARG(cons_f(c, b)) -> c4(F(c, b))
   ENCARG(cons_f(c, c)) -> c4(F(c, c))
   ENCODE_F(cons_f(z0, z1), a) -> c1(F(f(encArg(z0), encArg(z1)), a))
   ENCODE_F(cons_f(z0, z1), b) -> c1(F(f(encArg(z0), encArg(z1)), b))
   ENCODE_F(cons_f(z0, z1), c) -> c1(F(f(encArg(z0), encArg(z1)), c))
   ENCODE_F(x0, cons_f(x1, a)) -> c1(F(encArg(x0), f(encArg(x1), a)))
   ENCODE_F(x0, cons_f(x1, b)) -> c1(F(encArg(x0), f(encArg(x1), b)))
   ENCODE_F(x0, cons_f(x1, c)) -> c1(F(encArg(x0), f(encArg(x1), c)))
   ENCODE_F(x0, cons_f(x1, cons_f(z0, z1))) -> c1(F(encArg(x0), f(encArg(x1), f(encArg(z0), encArg(z1)))))
   ENCODE_F(x0, cons_f(a, x2)) -> c1(F(encArg(x0), f(a, encArg(x2))))
   ENCODE_F(x0, cons_f(b, x2)) -> c1(F(encArg(x0), f(b, encArg(x2))))
   ENCODE_F(x0, cons_f(cons_f(z0, z1), x2)) -> c1(F(encArg(x0), f(f(encArg(z0), encArg(z1)), encArg(x2))))
   ENCODE_F(c, cons_f(x1, x2)) -> c1(F(c, f(encArg(x1), encArg(x2))))
   ENCODE_F(cons_f(z0, z1), cons_f(x1, x2)) -> c1(F(f(encArg(z0), encArg(z1)), f(encArg(x1), encArg(x2))))
   ENCODE_F(cons_f(x0, a), x2) -> c1(F(f(encArg(x0), a), encArg(x2)))
   ENCODE_F(cons_f(x0, b), x2) -> c1(F(f(encArg(x0), b), encArg(x2)))
   ENCODE_F(cons_f(x0, c), x2) -> c1(F(f(encArg(x0), c), encArg(x2)))
   ENCODE_F(cons_f(x0, cons_f(z0, z1)), x2) -> c1(F(f(encArg(x0), f(encArg(z0), encArg(z1))), encArg(x2)))
   ENCODE_F(cons_f(b, x1), x2) -> c1(F(f(b, encArg(x1)), encArg(x2)))
   ENCODE_F(cons_f(cons_f(z0, z1), x1), x2) -> c1(F(f(f(encArg(z0), encArg(z1)), encArg(x1)), encArg(x2)))
   ENCARG(cons_f(z0, cons_f(c, z1))) -> c4(F(encArg(z0), encArg(z1)), ENCARG(z0), ENCARG(cons_f(c, z1)))
   ENCARG(cons_f(cons_f(c, z0), z1)) -> c4(F(encArg(z0), encArg(z1)), ENCARG(cons_f(c, z0)), ENCARG(z1))
   ENCODE_F(z0, cons_f(c, z1)) -> c1(F(encArg(z0), encArg(z1)))
   ENCODE_F(cons_f(c, z0), z1) -> c1(F(encArg(z0), encArg(z1)))
S tuples:
   F(f(f(a, z0), z1), z2) -> c9(F(f(z0, z2), f(z1, z2)), F(z0, z2), F(z1, z2))
   F(f(b, z0), z1) -> c10
   F(c, z0) -> c11
K tuples:none
Defined Rule Symbols:   encArg_1, f_2

Defined Pair Symbols:   F_2, ENCARG_1, ENCODE_F_2

Compound Symbols:   c9_3, c10, c11, c4_1, c4_2, c1_1, c4_3


----------------------------------------

(107) CdtForwardInstantiationProof (BOTH BOUNDS(ID, ID))
Use forward instantiation to replace ENCARG(cons_f(a, x1)) -> c4(ENCARG(x1)) by 
   ENCARG(cons_f(a, cons_f(a, y0))) -> c4(ENCARG(cons_f(a, y0)))
   ENCARG(cons_f(a, cons_f(b, y0))) -> c4(ENCARG(cons_f(b, y0)))
   ENCARG(cons_f(a, cons_f(c, y0))) -> c4(ENCARG(cons_f(c, y0)))
   ENCARG(cons_f(a, cons_f(y0, cons_f(y1, a)))) -> c4(ENCARG(cons_f(y0, cons_f(y1, a))))
   ENCARG(cons_f(a, cons_f(y0, cons_f(y1, b)))) -> c4(ENCARG(cons_f(y0, cons_f(y1, b))))
   ENCARG(cons_f(a, cons_f(y0, cons_f(y1, c)))) -> c4(ENCARG(cons_f(y0, cons_f(y1, c))))
   ENCARG(cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))) -> c4(ENCARG(cons_f(y0, cons_f(y1, cons_f(y2, y3)))))
   ENCARG(cons_f(a, cons_f(y0, cons_f(a, y1)))) -> c4(ENCARG(cons_f(y0, cons_f(a, y1))))
   ENCARG(cons_f(a, cons_f(y0, cons_f(b, y1)))) -> c4(ENCARG(cons_f(y0, cons_f(b, y1))))
   ENCARG(cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))) -> c4(ENCARG(cons_f(y0, cons_f(cons_f(y1, y2), y3))))
   ENCARG(cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))) -> c4(ENCARG(cons_f(cons_f(y0, y1), cons_f(y2, y3))))
   ENCARG(cons_f(a, cons_f(a, cons_f(y0, y1)))) -> c4(ENCARG(cons_f(a, cons_f(y0, y1))))
   ENCARG(cons_f(a, cons_f(b, cons_f(y0, y1)))) -> c4(ENCARG(cons_f(b, cons_f(y0, y1))))
   ENCARG(cons_f(a, cons_f(c, cons_f(y0, y1)))) -> c4(ENCARG(cons_f(c, cons_f(y0, y1))))
   ENCARG(cons_f(a, cons_f(cons_f(y0, a), y1))) -> c4(ENCARG(cons_f(cons_f(y0, a), y1)))
   ENCARG(cons_f(a, cons_f(cons_f(y0, b), y1))) -> c4(ENCARG(cons_f(cons_f(y0, b), y1)))
   ENCARG(cons_f(a, cons_f(cons_f(y0, c), y1))) -> c4(ENCARG(cons_f(cons_f(y0, c), y1)))
   ENCARG(cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))) -> c4(ENCARG(cons_f(cons_f(y0, cons_f(y1, y2)), y3)))
   ENCARG(cons_f(a, cons_f(cons_f(b, y0), y1))) -> c4(ENCARG(cons_f(cons_f(b, y0), y1)))
   ENCARG(cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))) -> c4(ENCARG(cons_f(cons_f(cons_f(y0, y1), y2), y3)))
   ENCARG(cons_f(a, cons_f(cons_f(y0, y1), a))) -> c4(ENCARG(cons_f(cons_f(y0, y1), a)))
   ENCARG(cons_f(a, cons_f(cons_f(y0, y1), b))) -> c4(ENCARG(cons_f(cons_f(y0, y1), b)))
   ENCARG(cons_f(a, cons_f(cons_f(y0, y1), c))) -> c4(ENCARG(cons_f(cons_f(y0, y1), c)))
   ENCARG(cons_f(a, cons_f(cons_f(a, y0), y1))) -> c4(ENCARG(cons_f(cons_f(a, y0), y1)))
   ENCARG(cons_f(a, cons_f(c, a))) -> c4(ENCARG(cons_f(c, a)))
   ENCARG(cons_f(a, cons_f(c, b))) -> c4(ENCARG(cons_f(c, b)))
   ENCARG(cons_f(a, cons_f(c, c))) -> c4(ENCARG(cons_f(c, c)))
   ENCARG(cons_f(a, cons_f(y0, cons_f(c, y1)))) -> c4(ENCARG(cons_f(y0, cons_f(c, y1))))
   ENCARG(cons_f(a, cons_f(cons_f(c, y0), y1))) -> c4(ENCARG(cons_f(cons_f(c, y0), y1)))

----------------------------------------

(108)
Obligation:
Complexity Dependency Tuples Problem

Rules:
   encArg(a) -> a
   encArg(b) -> b
   encArg(c) -> c
   encArg(cons_f(z0, z1)) -> f(encArg(z0), encArg(z1))
   f(f(f(a, z0), z1), z2) -> f(f(z0, z2), f(z1, z2))
   f(f(b, z0), z1) -> z0
   f(c, z0) -> z0
Tuples:
   F(f(f(a, z0), z1), z2) -> c9(F(f(z0, z2), f(z1, z2)), F(z0, z2), F(z1, z2))
   F(f(b, z0), z1) -> c10
   F(c, z0) -> c11
   ENCARG(cons_f(b, x1)) -> c4(ENCARG(x1))
   ENCARG(cons_f(c, x1)) -> c4(F(c, encArg(x1)), ENCARG(x1))
   ENCODE_F(c, x1) -> c1(F(c, encArg(x1)))
   ENCARG(cons_f(x0, cons_f(x1, a))) -> c4(F(encArg(x0), f(encArg(x1), a)), ENCARG(x0), ENCARG(cons_f(x1, a)))
   ENCARG(cons_f(x0, cons_f(x1, b))) -> c4(F(encArg(x0), f(encArg(x1), b)), ENCARG(x0), ENCARG(cons_f(x1, b)))
   ENCARG(cons_f(x0, cons_f(x1, c))) -> c4(F(encArg(x0), f(encArg(x1), c)), ENCARG(x0), ENCARG(cons_f(x1, c)))
   ENCARG(cons_f(x0, cons_f(x1, cons_f(z0, z1)))) -> c4(F(encArg(x0), f(encArg(x1), f(encArg(z0), encArg(z1)))), ENCARG(x0), ENCARG(cons_f(x1, cons_f(z0, z1))))
   ENCARG(cons_f(x0, cons_f(a, x2))) -> c4(F(encArg(x0), f(a, encArg(x2))), ENCARG(x0), ENCARG(cons_f(a, x2)))
   ENCARG(cons_f(x0, cons_f(b, x2))) -> c4(F(encArg(x0), f(b, encArg(x2))), ENCARG(x0), ENCARG(cons_f(b, x2)))
   ENCARG(cons_f(x0, cons_f(cons_f(z0, z1), x2))) -> c4(F(encArg(x0), f(f(encArg(z0), encArg(z1)), encArg(x2))), ENCARG(x0), ENCARG(cons_f(cons_f(z0, z1), x2)))
   ENCARG(cons_f(cons_f(z0, z1), cons_f(x1, x2))) -> c4(F(f(encArg(z0), encArg(z1)), f(encArg(x1), encArg(x2))), ENCARG(cons_f(z0, z1)), ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(a, cons_f(x1, x2))) -> c4(ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(b, cons_f(x1, x2))) -> c4(ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(c, cons_f(x1, x2))) -> c4(F(c, f(encArg(x1), encArg(x2))), ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(cons_f(x0, a), x2)) -> c4(F(f(encArg(x0), a), encArg(x2)), ENCARG(cons_f(x0, a)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, b), x2)) -> c4(F(f(encArg(x0), b), encArg(x2)), ENCARG(cons_f(x0, b)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, c), x2)) -> c4(F(f(encArg(x0), c), encArg(x2)), ENCARG(cons_f(x0, c)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, cons_f(z0, z1)), x2)) -> c4(F(f(encArg(x0), f(encArg(z0), encArg(z1))), encArg(x2)), ENCARG(cons_f(x0, cons_f(z0, z1))), ENCARG(x2))
   ENCARG(cons_f(cons_f(b, x1), x2)) -> c4(F(f(b, encArg(x1)), encArg(x2)), ENCARG(cons_f(b, x1)), ENCARG(x2))
   ENCARG(cons_f(cons_f(cons_f(z0, z1), x1), x2)) -> c4(F(f(f(encArg(z0), encArg(z1)), encArg(x1)), encArg(x2)), ENCARG(cons_f(cons_f(z0, z1), x1)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, x1), a)) -> c4(F(f(encArg(x0), encArg(x1)), a), ENCARG(cons_f(x0, x1)))
   ENCARG(cons_f(cons_f(x0, x1), b)) -> c4(F(f(encArg(x0), encArg(x1)), b), ENCARG(cons_f(x0, x1)))
   ENCARG(cons_f(cons_f(x0, x1), c)) -> c4(F(f(encArg(x0), encArg(x1)), c), ENCARG(cons_f(x0, x1)))
   ENCARG(cons_f(cons_f(a, x1), x2)) -> c4(ENCARG(cons_f(a, x1)), ENCARG(x2))
   ENCARG(cons_f(c, a)) -> c4(F(c, a))
   ENCARG(cons_f(c, b)) -> c4(F(c, b))
   ENCARG(cons_f(c, c)) -> c4(F(c, c))
   ENCODE_F(cons_f(z0, z1), a) -> c1(F(f(encArg(z0), encArg(z1)), a))
   ENCODE_F(cons_f(z0, z1), b) -> c1(F(f(encArg(z0), encArg(z1)), b))
   ENCODE_F(cons_f(z0, z1), c) -> c1(F(f(encArg(z0), encArg(z1)), c))
   ENCODE_F(x0, cons_f(x1, a)) -> c1(F(encArg(x0), f(encArg(x1), a)))
   ENCODE_F(x0, cons_f(x1, b)) -> c1(F(encArg(x0), f(encArg(x1), b)))
   ENCODE_F(x0, cons_f(x1, c)) -> c1(F(encArg(x0), f(encArg(x1), c)))
   ENCODE_F(x0, cons_f(x1, cons_f(z0, z1))) -> c1(F(encArg(x0), f(encArg(x1), f(encArg(z0), encArg(z1)))))
   ENCODE_F(x0, cons_f(a, x2)) -> c1(F(encArg(x0), f(a, encArg(x2))))
   ENCODE_F(x0, cons_f(b, x2)) -> c1(F(encArg(x0), f(b, encArg(x2))))
   ENCODE_F(x0, cons_f(cons_f(z0, z1), x2)) -> c1(F(encArg(x0), f(f(encArg(z0), encArg(z1)), encArg(x2))))
   ENCODE_F(c, cons_f(x1, x2)) -> c1(F(c, f(encArg(x1), encArg(x2))))
   ENCODE_F(cons_f(z0, z1), cons_f(x1, x2)) -> c1(F(f(encArg(z0), encArg(z1)), f(encArg(x1), encArg(x2))))
   ENCODE_F(cons_f(x0, a), x2) -> c1(F(f(encArg(x0), a), encArg(x2)))
   ENCODE_F(cons_f(x0, b), x2) -> c1(F(f(encArg(x0), b), encArg(x2)))
   ENCODE_F(cons_f(x0, c), x2) -> c1(F(f(encArg(x0), c), encArg(x2)))
   ENCODE_F(cons_f(x0, cons_f(z0, z1)), x2) -> c1(F(f(encArg(x0), f(encArg(z0), encArg(z1))), encArg(x2)))
   ENCODE_F(cons_f(b, x1), x2) -> c1(F(f(b, encArg(x1)), encArg(x2)))
   ENCODE_F(cons_f(cons_f(z0, z1), x1), x2) -> c1(F(f(f(encArg(z0), encArg(z1)), encArg(x1)), encArg(x2)))
   ENCARG(cons_f(z0, cons_f(c, z1))) -> c4(F(encArg(z0), encArg(z1)), ENCARG(z0), ENCARG(cons_f(c, z1)))
   ENCARG(cons_f(cons_f(c, z0), z1)) -> c4(F(encArg(z0), encArg(z1)), ENCARG(cons_f(c, z0)), ENCARG(z1))
   ENCODE_F(z0, cons_f(c, z1)) -> c1(F(encArg(z0), encArg(z1)))
   ENCODE_F(cons_f(c, z0), z1) -> c1(F(encArg(z0), encArg(z1)))
   ENCARG(cons_f(a, cons_f(a, y0))) -> c4(ENCARG(cons_f(a, y0)))
   ENCARG(cons_f(a, cons_f(b, y0))) -> c4(ENCARG(cons_f(b, y0)))
   ENCARG(cons_f(a, cons_f(c, y0))) -> c4(ENCARG(cons_f(c, y0)))
   ENCARG(cons_f(a, cons_f(y0, cons_f(y1, a)))) -> c4(ENCARG(cons_f(y0, cons_f(y1, a))))
   ENCARG(cons_f(a, cons_f(y0, cons_f(y1, b)))) -> c4(ENCARG(cons_f(y0, cons_f(y1, b))))
   ENCARG(cons_f(a, cons_f(y0, cons_f(y1, c)))) -> c4(ENCARG(cons_f(y0, cons_f(y1, c))))
   ENCARG(cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))) -> c4(ENCARG(cons_f(y0, cons_f(y1, cons_f(y2, y3)))))
   ENCARG(cons_f(a, cons_f(y0, cons_f(a, y1)))) -> c4(ENCARG(cons_f(y0, cons_f(a, y1))))
   ENCARG(cons_f(a, cons_f(y0, cons_f(b, y1)))) -> c4(ENCARG(cons_f(y0, cons_f(b, y1))))
   ENCARG(cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))) -> c4(ENCARG(cons_f(y0, cons_f(cons_f(y1, y2), y3))))
   ENCARG(cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))) -> c4(ENCARG(cons_f(cons_f(y0, y1), cons_f(y2, y3))))
   ENCARG(cons_f(a, cons_f(a, cons_f(y0, y1)))) -> c4(ENCARG(cons_f(a, cons_f(y0, y1))))
   ENCARG(cons_f(a, cons_f(b, cons_f(y0, y1)))) -> c4(ENCARG(cons_f(b, cons_f(y0, y1))))
   ENCARG(cons_f(a, cons_f(c, cons_f(y0, y1)))) -> c4(ENCARG(cons_f(c, cons_f(y0, y1))))
   ENCARG(cons_f(a, cons_f(cons_f(y0, a), y1))) -> c4(ENCARG(cons_f(cons_f(y0, a), y1)))
   ENCARG(cons_f(a, cons_f(cons_f(y0, b), y1))) -> c4(ENCARG(cons_f(cons_f(y0, b), y1)))
   ENCARG(cons_f(a, cons_f(cons_f(y0, c), y1))) -> c4(ENCARG(cons_f(cons_f(y0, c), y1)))
   ENCARG(cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))) -> c4(ENCARG(cons_f(cons_f(y0, cons_f(y1, y2)), y3)))
   ENCARG(cons_f(a, cons_f(cons_f(b, y0), y1))) -> c4(ENCARG(cons_f(cons_f(b, y0), y1)))
   ENCARG(cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))) -> c4(ENCARG(cons_f(cons_f(cons_f(y0, y1), y2), y3)))
   ENCARG(cons_f(a, cons_f(cons_f(y0, y1), a))) -> c4(ENCARG(cons_f(cons_f(y0, y1), a)))
   ENCARG(cons_f(a, cons_f(cons_f(y0, y1), b))) -> c4(ENCARG(cons_f(cons_f(y0, y1), b)))
   ENCARG(cons_f(a, cons_f(cons_f(y0, y1), c))) -> c4(ENCARG(cons_f(cons_f(y0, y1), c)))
   ENCARG(cons_f(a, cons_f(cons_f(a, y0), y1))) -> c4(ENCARG(cons_f(cons_f(a, y0), y1)))
   ENCARG(cons_f(a, cons_f(c, a))) -> c4(ENCARG(cons_f(c, a)))
   ENCARG(cons_f(a, cons_f(c, b))) -> c4(ENCARG(cons_f(c, b)))
   ENCARG(cons_f(a, cons_f(c, c))) -> c4(ENCARG(cons_f(c, c)))
   ENCARG(cons_f(a, cons_f(y0, cons_f(c, y1)))) -> c4(ENCARG(cons_f(y0, cons_f(c, y1))))
   ENCARG(cons_f(a, cons_f(cons_f(c, y0), y1))) -> c4(ENCARG(cons_f(cons_f(c, y0), y1)))
S tuples:
   F(f(f(a, z0), z1), z2) -> c9(F(f(z0, z2), f(z1, z2)), F(z0, z2), F(z1, z2))
   F(f(b, z0), z1) -> c10
   F(c, z0) -> c11
K tuples:none
Defined Rule Symbols:   encArg_1, f_2

Defined Pair Symbols:   F_2, ENCARG_1, ENCODE_F_2

Compound Symbols:   c9_3, c10, c11, c4_1, c4_2, c1_1, c4_3


----------------------------------------

(109) CdtForwardInstantiationProof (BOTH BOUNDS(ID, ID))
Use forward instantiation to replace ENCARG(cons_f(b, x1)) -> c4(ENCARG(x1)) by 
   ENCARG(cons_f(b, cons_f(b, y0))) -> c4(ENCARG(cons_f(b, y0)))
   ENCARG(cons_f(b, cons_f(c, y0))) -> c4(ENCARG(cons_f(c, y0)))
   ENCARG(cons_f(b, cons_f(y0, cons_f(y1, a)))) -> c4(ENCARG(cons_f(y0, cons_f(y1, a))))
   ENCARG(cons_f(b, cons_f(y0, cons_f(y1, b)))) -> c4(ENCARG(cons_f(y0, cons_f(y1, b))))
   ENCARG(cons_f(b, cons_f(y0, cons_f(y1, c)))) -> c4(ENCARG(cons_f(y0, cons_f(y1, c))))
   ENCARG(cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3))))) -> c4(ENCARG(cons_f(y0, cons_f(y1, cons_f(y2, y3)))))
   ENCARG(cons_f(b, cons_f(y0, cons_f(a, y1)))) -> c4(ENCARG(cons_f(y0, cons_f(a, y1))))
   ENCARG(cons_f(b, cons_f(y0, cons_f(b, y1)))) -> c4(ENCARG(cons_f(y0, cons_f(b, y1))))
   ENCARG(cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3)))) -> c4(ENCARG(cons_f(y0, cons_f(cons_f(y1, y2), y3))))
   ENCARG(cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3)))) -> c4(ENCARG(cons_f(cons_f(y0, y1), cons_f(y2, y3))))
   ENCARG(cons_f(b, cons_f(a, cons_f(y0, y1)))) -> c4(ENCARG(cons_f(a, cons_f(y0, y1))))
   ENCARG(cons_f(b, cons_f(b, cons_f(y0, y1)))) -> c4(ENCARG(cons_f(b, cons_f(y0, y1))))
   ENCARG(cons_f(b, cons_f(c, cons_f(y0, y1)))) -> c4(ENCARG(cons_f(c, cons_f(y0, y1))))
   ENCARG(cons_f(b, cons_f(cons_f(y0, a), y1))) -> c4(ENCARG(cons_f(cons_f(y0, a), y1)))
   ENCARG(cons_f(b, cons_f(cons_f(y0, b), y1))) -> c4(ENCARG(cons_f(cons_f(y0, b), y1)))
   ENCARG(cons_f(b, cons_f(cons_f(y0, c), y1))) -> c4(ENCARG(cons_f(cons_f(y0, c), y1)))
   ENCARG(cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3))) -> c4(ENCARG(cons_f(cons_f(y0, cons_f(y1, y2)), y3)))
   ENCARG(cons_f(b, cons_f(cons_f(b, y0), y1))) -> c4(ENCARG(cons_f(cons_f(b, y0), y1)))
   ENCARG(cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3))) -> c4(ENCARG(cons_f(cons_f(cons_f(y0, y1), y2), y3)))
   ENCARG(cons_f(b, cons_f(cons_f(y0, y1), a))) -> c4(ENCARG(cons_f(cons_f(y0, y1), a)))
   ENCARG(cons_f(b, cons_f(cons_f(y0, y1), b))) -> c4(ENCARG(cons_f(cons_f(y0, y1), b)))
   ENCARG(cons_f(b, cons_f(cons_f(y0, y1), c))) -> c4(ENCARG(cons_f(cons_f(y0, y1), c)))
   ENCARG(cons_f(b, cons_f(cons_f(a, y0), y1))) -> c4(ENCARG(cons_f(cons_f(a, y0), y1)))
   ENCARG(cons_f(b, cons_f(c, a))) -> c4(ENCARG(cons_f(c, a)))
   ENCARG(cons_f(b, cons_f(c, b))) -> c4(ENCARG(cons_f(c, b)))
   ENCARG(cons_f(b, cons_f(c, c))) -> c4(ENCARG(cons_f(c, c)))
   ENCARG(cons_f(b, cons_f(y0, cons_f(c, y1)))) -> c4(ENCARG(cons_f(y0, cons_f(c, y1))))
   ENCARG(cons_f(b, cons_f(cons_f(c, y0), y1))) -> c4(ENCARG(cons_f(cons_f(c, y0), y1)))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, y0)))) -> c4(ENCARG(cons_f(a, cons_f(a, y0))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, y0)))) -> c4(ENCARG(cons_f(a, cons_f(b, y0))))
   ENCARG(cons_f(b, cons_f(a, cons_f(c, y0)))) -> c4(ENCARG(cons_f(a, cons_f(c, y0))))
   ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(y1, a)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(y1, b)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(y1, c)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(a, y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(b, y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(a, cons_f(c, cons_f(y0, y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, a), y1))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, b), y1))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, c), y1))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(b, y0), y1))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, y1), a))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, y1), b))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, y1), c))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(a, y0), y1))))
   ENCARG(cons_f(b, cons_f(a, cons_f(c, a)))) -> c4(ENCARG(cons_f(a, cons_f(c, a))))
   ENCARG(cons_f(b, cons_f(a, cons_f(c, b)))) -> c4(ENCARG(cons_f(a, cons_f(c, b))))
   ENCARG(cons_f(b, cons_f(a, cons_f(c, c)))) -> c4(ENCARG(cons_f(a, cons_f(c, c))))
   ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(c, y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(c, y0), y1))))

----------------------------------------

(110)
Obligation:
Complexity Dependency Tuples Problem

Rules:
   encArg(a) -> a
   encArg(b) -> b
   encArg(c) -> c
   encArg(cons_f(z0, z1)) -> f(encArg(z0), encArg(z1))
   f(f(f(a, z0), z1), z2) -> f(f(z0, z2), f(z1, z2))
   f(f(b, z0), z1) -> z0
   f(c, z0) -> z0
Tuples:
   F(f(f(a, z0), z1), z2) -> c9(F(f(z0, z2), f(z1, z2)), F(z0, z2), F(z1, z2))
   F(f(b, z0), z1) -> c10
   F(c, z0) -> c11
   ENCARG(cons_f(c, x1)) -> c4(F(c, encArg(x1)), ENCARG(x1))
   ENCODE_F(c, x1) -> c1(F(c, encArg(x1)))
   ENCARG(cons_f(x0, cons_f(x1, a))) -> c4(F(encArg(x0), f(encArg(x1), a)), ENCARG(x0), ENCARG(cons_f(x1, a)))
   ENCARG(cons_f(x0, cons_f(x1, b))) -> c4(F(encArg(x0), f(encArg(x1), b)), ENCARG(x0), ENCARG(cons_f(x1, b)))
   ENCARG(cons_f(x0, cons_f(x1, c))) -> c4(F(encArg(x0), f(encArg(x1), c)), ENCARG(x0), ENCARG(cons_f(x1, c)))
   ENCARG(cons_f(x0, cons_f(x1, cons_f(z0, z1)))) -> c4(F(encArg(x0), f(encArg(x1), f(encArg(z0), encArg(z1)))), ENCARG(x0), ENCARG(cons_f(x1, cons_f(z0, z1))))
   ENCARG(cons_f(x0, cons_f(a, x2))) -> c4(F(encArg(x0), f(a, encArg(x2))), ENCARG(x0), ENCARG(cons_f(a, x2)))
   ENCARG(cons_f(x0, cons_f(b, x2))) -> c4(F(encArg(x0), f(b, encArg(x2))), ENCARG(x0), ENCARG(cons_f(b, x2)))
   ENCARG(cons_f(x0, cons_f(cons_f(z0, z1), x2))) -> c4(F(encArg(x0), f(f(encArg(z0), encArg(z1)), encArg(x2))), ENCARG(x0), ENCARG(cons_f(cons_f(z0, z1), x2)))
   ENCARG(cons_f(cons_f(z0, z1), cons_f(x1, x2))) -> c4(F(f(encArg(z0), encArg(z1)), f(encArg(x1), encArg(x2))), ENCARG(cons_f(z0, z1)), ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(a, cons_f(x1, x2))) -> c4(ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(b, cons_f(x1, x2))) -> c4(ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(c, cons_f(x1, x2))) -> c4(F(c, f(encArg(x1), encArg(x2))), ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(cons_f(x0, a), x2)) -> c4(F(f(encArg(x0), a), encArg(x2)), ENCARG(cons_f(x0, a)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, b), x2)) -> c4(F(f(encArg(x0), b), encArg(x2)), ENCARG(cons_f(x0, b)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, c), x2)) -> c4(F(f(encArg(x0), c), encArg(x2)), ENCARG(cons_f(x0, c)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, cons_f(z0, z1)), x2)) -> c4(F(f(encArg(x0), f(encArg(z0), encArg(z1))), encArg(x2)), ENCARG(cons_f(x0, cons_f(z0, z1))), ENCARG(x2))
   ENCARG(cons_f(cons_f(b, x1), x2)) -> c4(F(f(b, encArg(x1)), encArg(x2)), ENCARG(cons_f(b, x1)), ENCARG(x2))
   ENCARG(cons_f(cons_f(cons_f(z0, z1), x1), x2)) -> c4(F(f(f(encArg(z0), encArg(z1)), encArg(x1)), encArg(x2)), ENCARG(cons_f(cons_f(z0, z1), x1)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, x1), a)) -> c4(F(f(encArg(x0), encArg(x1)), a), ENCARG(cons_f(x0, x1)))
   ENCARG(cons_f(cons_f(x0, x1), b)) -> c4(F(f(encArg(x0), encArg(x1)), b), ENCARG(cons_f(x0, x1)))
   ENCARG(cons_f(cons_f(x0, x1), c)) -> c4(F(f(encArg(x0), encArg(x1)), c), ENCARG(cons_f(x0, x1)))
   ENCARG(cons_f(cons_f(a, x1), x2)) -> c4(ENCARG(cons_f(a, x1)), ENCARG(x2))
   ENCARG(cons_f(c, a)) -> c4(F(c, a))
   ENCARG(cons_f(c, b)) -> c4(F(c, b))
   ENCARG(cons_f(c, c)) -> c4(F(c, c))
   ENCODE_F(cons_f(z0, z1), a) -> c1(F(f(encArg(z0), encArg(z1)), a))
   ENCODE_F(cons_f(z0, z1), b) -> c1(F(f(encArg(z0), encArg(z1)), b))
   ENCODE_F(cons_f(z0, z1), c) -> c1(F(f(encArg(z0), encArg(z1)), c))
   ENCODE_F(x0, cons_f(x1, a)) -> c1(F(encArg(x0), f(encArg(x1), a)))
   ENCODE_F(x0, cons_f(x1, b)) -> c1(F(encArg(x0), f(encArg(x1), b)))
   ENCODE_F(x0, cons_f(x1, c)) -> c1(F(encArg(x0), f(encArg(x1), c)))
   ENCODE_F(x0, cons_f(x1, cons_f(z0, z1))) -> c1(F(encArg(x0), f(encArg(x1), f(encArg(z0), encArg(z1)))))
   ENCODE_F(x0, cons_f(a, x2)) -> c1(F(encArg(x0), f(a, encArg(x2))))
   ENCODE_F(x0, cons_f(b, x2)) -> c1(F(encArg(x0), f(b, encArg(x2))))
   ENCODE_F(x0, cons_f(cons_f(z0, z1), x2)) -> c1(F(encArg(x0), f(f(encArg(z0), encArg(z1)), encArg(x2))))
   ENCODE_F(c, cons_f(x1, x2)) -> c1(F(c, f(encArg(x1), encArg(x2))))
   ENCODE_F(cons_f(z0, z1), cons_f(x1, x2)) -> c1(F(f(encArg(z0), encArg(z1)), f(encArg(x1), encArg(x2))))
   ENCODE_F(cons_f(x0, a), x2) -> c1(F(f(encArg(x0), a), encArg(x2)))
   ENCODE_F(cons_f(x0, b), x2) -> c1(F(f(encArg(x0), b), encArg(x2)))
   ENCODE_F(cons_f(x0, c), x2) -> c1(F(f(encArg(x0), c), encArg(x2)))
   ENCODE_F(cons_f(x0, cons_f(z0, z1)), x2) -> c1(F(f(encArg(x0), f(encArg(z0), encArg(z1))), encArg(x2)))
   ENCODE_F(cons_f(b, x1), x2) -> c1(F(f(b, encArg(x1)), encArg(x2)))
   ENCODE_F(cons_f(cons_f(z0, z1), x1), x2) -> c1(F(f(f(encArg(z0), encArg(z1)), encArg(x1)), encArg(x2)))
   ENCARG(cons_f(z0, cons_f(c, z1))) -> c4(F(encArg(z0), encArg(z1)), ENCARG(z0), ENCARG(cons_f(c, z1)))
   ENCARG(cons_f(cons_f(c, z0), z1)) -> c4(F(encArg(z0), encArg(z1)), ENCARG(cons_f(c, z0)), ENCARG(z1))
   ENCODE_F(z0, cons_f(c, z1)) -> c1(F(encArg(z0), encArg(z1)))
   ENCODE_F(cons_f(c, z0), z1) -> c1(F(encArg(z0), encArg(z1)))
   ENCARG(cons_f(a, cons_f(a, y0))) -> c4(ENCARG(cons_f(a, y0)))
   ENCARG(cons_f(a, cons_f(b, y0))) -> c4(ENCARG(cons_f(b, y0)))
   ENCARG(cons_f(a, cons_f(c, y0))) -> c4(ENCARG(cons_f(c, y0)))
   ENCARG(cons_f(a, cons_f(y0, cons_f(y1, a)))) -> c4(ENCARG(cons_f(y0, cons_f(y1, a))))
   ENCARG(cons_f(a, cons_f(y0, cons_f(y1, b)))) -> c4(ENCARG(cons_f(y0, cons_f(y1, b))))
   ENCARG(cons_f(a, cons_f(y0, cons_f(y1, c)))) -> c4(ENCARG(cons_f(y0, cons_f(y1, c))))
   ENCARG(cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))) -> c4(ENCARG(cons_f(y0, cons_f(y1, cons_f(y2, y3)))))
   ENCARG(cons_f(a, cons_f(y0, cons_f(a, y1)))) -> c4(ENCARG(cons_f(y0, cons_f(a, y1))))
   ENCARG(cons_f(a, cons_f(y0, cons_f(b, y1)))) -> c4(ENCARG(cons_f(y0, cons_f(b, y1))))
   ENCARG(cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))) -> c4(ENCARG(cons_f(y0, cons_f(cons_f(y1, y2), y3))))
   ENCARG(cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))) -> c4(ENCARG(cons_f(cons_f(y0, y1), cons_f(y2, y3))))
   ENCARG(cons_f(a, cons_f(a, cons_f(y0, y1)))) -> c4(ENCARG(cons_f(a, cons_f(y0, y1))))
   ENCARG(cons_f(a, cons_f(b, cons_f(y0, y1)))) -> c4(ENCARG(cons_f(b, cons_f(y0, y1))))
   ENCARG(cons_f(a, cons_f(c, cons_f(y0, y1)))) -> c4(ENCARG(cons_f(c, cons_f(y0, y1))))
   ENCARG(cons_f(a, cons_f(cons_f(y0, a), y1))) -> c4(ENCARG(cons_f(cons_f(y0, a), y1)))
   ENCARG(cons_f(a, cons_f(cons_f(y0, b), y1))) -> c4(ENCARG(cons_f(cons_f(y0, b), y1)))
   ENCARG(cons_f(a, cons_f(cons_f(y0, c), y1))) -> c4(ENCARG(cons_f(cons_f(y0, c), y1)))
   ENCARG(cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))) -> c4(ENCARG(cons_f(cons_f(y0, cons_f(y1, y2)), y3)))
   ENCARG(cons_f(a, cons_f(cons_f(b, y0), y1))) -> c4(ENCARG(cons_f(cons_f(b, y0), y1)))
   ENCARG(cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))) -> c4(ENCARG(cons_f(cons_f(cons_f(y0, y1), y2), y3)))
   ENCARG(cons_f(a, cons_f(cons_f(y0, y1), a))) -> c4(ENCARG(cons_f(cons_f(y0, y1), a)))
   ENCARG(cons_f(a, cons_f(cons_f(y0, y1), b))) -> c4(ENCARG(cons_f(cons_f(y0, y1), b)))
   ENCARG(cons_f(a, cons_f(cons_f(y0, y1), c))) -> c4(ENCARG(cons_f(cons_f(y0, y1), c)))
   ENCARG(cons_f(a, cons_f(cons_f(a, y0), y1))) -> c4(ENCARG(cons_f(cons_f(a, y0), y1)))
   ENCARG(cons_f(a, cons_f(c, a))) -> c4(ENCARG(cons_f(c, a)))
   ENCARG(cons_f(a, cons_f(c, b))) -> c4(ENCARG(cons_f(c, b)))
   ENCARG(cons_f(a, cons_f(c, c))) -> c4(ENCARG(cons_f(c, c)))
   ENCARG(cons_f(a, cons_f(y0, cons_f(c, y1)))) -> c4(ENCARG(cons_f(y0, cons_f(c, y1))))
   ENCARG(cons_f(a, cons_f(cons_f(c, y0), y1))) -> c4(ENCARG(cons_f(cons_f(c, y0), y1)))
   ENCARG(cons_f(b, cons_f(b, y0))) -> c4(ENCARG(cons_f(b, y0)))
   ENCARG(cons_f(b, cons_f(c, y0))) -> c4(ENCARG(cons_f(c, y0)))
   ENCARG(cons_f(b, cons_f(y0, cons_f(y1, a)))) -> c4(ENCARG(cons_f(y0, cons_f(y1, a))))
   ENCARG(cons_f(b, cons_f(y0, cons_f(y1, b)))) -> c4(ENCARG(cons_f(y0, cons_f(y1, b))))
   ENCARG(cons_f(b, cons_f(y0, cons_f(y1, c)))) -> c4(ENCARG(cons_f(y0, cons_f(y1, c))))
   ENCARG(cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3))))) -> c4(ENCARG(cons_f(y0, cons_f(y1, cons_f(y2, y3)))))
   ENCARG(cons_f(b, cons_f(y0, cons_f(a, y1)))) -> c4(ENCARG(cons_f(y0, cons_f(a, y1))))
   ENCARG(cons_f(b, cons_f(y0, cons_f(b, y1)))) -> c4(ENCARG(cons_f(y0, cons_f(b, y1))))
   ENCARG(cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3)))) -> c4(ENCARG(cons_f(y0, cons_f(cons_f(y1, y2), y3))))
   ENCARG(cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3)))) -> c4(ENCARG(cons_f(cons_f(y0, y1), cons_f(y2, y3))))
   ENCARG(cons_f(b, cons_f(a, cons_f(y0, y1)))) -> c4(ENCARG(cons_f(a, cons_f(y0, y1))))
   ENCARG(cons_f(b, cons_f(b, cons_f(y0, y1)))) -> c4(ENCARG(cons_f(b, cons_f(y0, y1))))
   ENCARG(cons_f(b, cons_f(c, cons_f(y0, y1)))) -> c4(ENCARG(cons_f(c, cons_f(y0, y1))))
   ENCARG(cons_f(b, cons_f(cons_f(y0, a), y1))) -> c4(ENCARG(cons_f(cons_f(y0, a), y1)))
   ENCARG(cons_f(b, cons_f(cons_f(y0, b), y1))) -> c4(ENCARG(cons_f(cons_f(y0, b), y1)))
   ENCARG(cons_f(b, cons_f(cons_f(y0, c), y1))) -> c4(ENCARG(cons_f(cons_f(y0, c), y1)))
   ENCARG(cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3))) -> c4(ENCARG(cons_f(cons_f(y0, cons_f(y1, y2)), y3)))
   ENCARG(cons_f(b, cons_f(cons_f(b, y0), y1))) -> c4(ENCARG(cons_f(cons_f(b, y0), y1)))
   ENCARG(cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3))) -> c4(ENCARG(cons_f(cons_f(cons_f(y0, y1), y2), y3)))
   ENCARG(cons_f(b, cons_f(cons_f(y0, y1), a))) -> c4(ENCARG(cons_f(cons_f(y0, y1), a)))
   ENCARG(cons_f(b, cons_f(cons_f(y0, y1), b))) -> c4(ENCARG(cons_f(cons_f(y0, y1), b)))
   ENCARG(cons_f(b, cons_f(cons_f(y0, y1), c))) -> c4(ENCARG(cons_f(cons_f(y0, y1), c)))
   ENCARG(cons_f(b, cons_f(cons_f(a, y0), y1))) -> c4(ENCARG(cons_f(cons_f(a, y0), y1)))
   ENCARG(cons_f(b, cons_f(c, a))) -> c4(ENCARG(cons_f(c, a)))
   ENCARG(cons_f(b, cons_f(c, b))) -> c4(ENCARG(cons_f(c, b)))
   ENCARG(cons_f(b, cons_f(c, c))) -> c4(ENCARG(cons_f(c, c)))
   ENCARG(cons_f(b, cons_f(y0, cons_f(c, y1)))) -> c4(ENCARG(cons_f(y0, cons_f(c, y1))))
   ENCARG(cons_f(b, cons_f(cons_f(c, y0), y1))) -> c4(ENCARG(cons_f(cons_f(c, y0), y1)))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, y0)))) -> c4(ENCARG(cons_f(a, cons_f(a, y0))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, y0)))) -> c4(ENCARG(cons_f(a, cons_f(b, y0))))
   ENCARG(cons_f(b, cons_f(a, cons_f(c, y0)))) -> c4(ENCARG(cons_f(a, cons_f(c, y0))))
   ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(y1, a)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(y1, b)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(y1, c)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(a, y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(b, y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(a, cons_f(c, cons_f(y0, y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, a), y1))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, b), y1))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, c), y1))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(b, y0), y1))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, y1), a))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, y1), b))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, y1), c))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(a, y0), y1))))
   ENCARG(cons_f(b, cons_f(a, cons_f(c, a)))) -> c4(ENCARG(cons_f(a, cons_f(c, a))))
   ENCARG(cons_f(b, cons_f(a, cons_f(c, b)))) -> c4(ENCARG(cons_f(a, cons_f(c, b))))
   ENCARG(cons_f(b, cons_f(a, cons_f(c, c)))) -> c4(ENCARG(cons_f(a, cons_f(c, c))))
   ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(c, y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(c, y0), y1))))
S tuples:
   F(f(f(a, z0), z1), z2) -> c9(F(f(z0, z2), f(z1, z2)), F(z0, z2), F(z1, z2))
   F(f(b, z0), z1) -> c10
   F(c, z0) -> c11
K tuples:none
Defined Rule Symbols:   encArg_1, f_2

Defined Pair Symbols:   F_2, ENCARG_1, ENCODE_F_2

Compound Symbols:   c9_3, c10, c11, c4_2, c1_1, c4_3, c4_1


----------------------------------------

(111) CdtForwardInstantiationProof (BOTH BOUNDS(ID, ID))
Use forward instantiation to replace ENCARG(cons_f(a, cons_f(x1, x2))) -> c4(ENCARG(cons_f(x1, x2))) by 
   ENCARG(cons_f(a, cons_f(c, z1))) -> c4(ENCARG(cons_f(c, z1)))
   ENCARG(cons_f(a, cons_f(z0, cons_f(y1, a)))) -> c4(ENCARG(cons_f(z0, cons_f(y1, a))))
   ENCARG(cons_f(a, cons_f(z0, cons_f(y1, b)))) -> c4(ENCARG(cons_f(z0, cons_f(y1, b))))
   ENCARG(cons_f(a, cons_f(z0, cons_f(y1, c)))) -> c4(ENCARG(cons_f(z0, cons_f(y1, c))))
   ENCARG(cons_f(a, cons_f(z0, cons_f(y1, cons_f(y2, y3))))) -> c4(ENCARG(cons_f(z0, cons_f(y1, cons_f(y2, y3)))))
   ENCARG(cons_f(a, cons_f(z0, cons_f(a, y1)))) -> c4(ENCARG(cons_f(z0, cons_f(a, y1))))
   ENCARG(cons_f(a, cons_f(z0, cons_f(b, y1)))) -> c4(ENCARG(cons_f(z0, cons_f(b, y1))))
   ENCARG(cons_f(a, cons_f(z0, cons_f(cons_f(y1, y2), y3)))) -> c4(ENCARG(cons_f(z0, cons_f(cons_f(y1, y2), y3))))
   ENCARG(cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))) -> c4(ENCARG(cons_f(cons_f(y0, y1), cons_f(y2, y3))))
   ENCARG(cons_f(a, cons_f(a, cons_f(y0, y1)))) -> c4(ENCARG(cons_f(a, cons_f(y0, y1))))
   ENCARG(cons_f(a, cons_f(b, cons_f(y0, y1)))) -> c4(ENCARG(cons_f(b, cons_f(y0, y1))))
   ENCARG(cons_f(a, cons_f(c, cons_f(y0, y1)))) -> c4(ENCARG(cons_f(c, cons_f(y0, y1))))
   ENCARG(cons_f(a, cons_f(cons_f(y0, a), z1))) -> c4(ENCARG(cons_f(cons_f(y0, a), z1)))
   ENCARG(cons_f(a, cons_f(cons_f(y0, b), z1))) -> c4(ENCARG(cons_f(cons_f(y0, b), z1)))
   ENCARG(cons_f(a, cons_f(cons_f(y0, c), z1))) -> c4(ENCARG(cons_f(cons_f(y0, c), z1)))
   ENCARG(cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), z1))) -> c4(ENCARG(cons_f(cons_f(y0, cons_f(y1, y2)), z1)))
   ENCARG(cons_f(a, cons_f(cons_f(b, y0), z1))) -> c4(ENCARG(cons_f(cons_f(b, y0), z1)))
   ENCARG(cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), z1))) -> c4(ENCARG(cons_f(cons_f(cons_f(y0, y1), y2), z1)))
   ENCARG(cons_f(a, cons_f(cons_f(y0, y1), a))) -> c4(ENCARG(cons_f(cons_f(y0, y1), a)))
   ENCARG(cons_f(a, cons_f(cons_f(y0, y1), b))) -> c4(ENCARG(cons_f(cons_f(y0, y1), b)))
   ENCARG(cons_f(a, cons_f(cons_f(y0, y1), c))) -> c4(ENCARG(cons_f(cons_f(y0, y1), c)))
   ENCARG(cons_f(a, cons_f(cons_f(a, y0), z1))) -> c4(ENCARG(cons_f(cons_f(a, y0), z1)))
   ENCARG(cons_f(a, cons_f(c, a))) -> c4(ENCARG(cons_f(c, a)))
   ENCARG(cons_f(a, cons_f(c, b))) -> c4(ENCARG(cons_f(c, b)))
   ENCARG(cons_f(a, cons_f(c, c))) -> c4(ENCARG(cons_f(c, c)))
   ENCARG(cons_f(a, cons_f(z0, cons_f(c, y1)))) -> c4(ENCARG(cons_f(z0, cons_f(c, y1))))
   ENCARG(cons_f(a, cons_f(cons_f(c, y0), z1))) -> c4(ENCARG(cons_f(cons_f(c, y0), z1)))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, y0)))) -> c4(ENCARG(cons_f(a, cons_f(a, y0))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, y0)))) -> c4(ENCARG(cons_f(a, cons_f(b, y0))))
   ENCARG(cons_f(a, cons_f(a, cons_f(c, y0)))) -> c4(ENCARG(cons_f(a, cons_f(c, y0))))
   ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, a))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(y1, a)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, b))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(y1, b)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, c))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(y1, c)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(a, y1))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(a, y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(b, y1))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(b, y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(c, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(a, cons_f(c, cons_f(y0, y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, a), y1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, a), y1))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, b), y1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, b), y1))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, c), y1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, c), y1))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(b, y0), y1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(b, y0), y1))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), a)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, y1), a))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), b)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, y1), b))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), c)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, y1), c))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(a, y0), y1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(a, y0), y1))))
   ENCARG(cons_f(a, cons_f(a, cons_f(c, a)))) -> c4(ENCARG(cons_f(a, cons_f(c, a))))
   ENCARG(cons_f(a, cons_f(a, cons_f(c, b)))) -> c4(ENCARG(cons_f(a, cons_f(c, b))))
   ENCARG(cons_f(a, cons_f(a, cons_f(c, c)))) -> c4(ENCARG(cons_f(a, cons_f(c, c))))
   ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(c, y1))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(c, y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(c, y0), y1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(c, y0), y1))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, y0)))) -> c4(ENCARG(cons_f(b, cons_f(b, y0))))
   ENCARG(cons_f(a, cons_f(b, cons_f(c, y0)))) -> c4(ENCARG(cons_f(b, cons_f(c, y0))))
   ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, a))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(y1, a)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, b))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(y1, b)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, c))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(y1, c)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(a, y1))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(a, y1)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(b, y1))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(b, y1)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3))))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, y1)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(y0, y1)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(c, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(b, cons_f(c, cons_f(y0, y1)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, a), y1)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, a), y1))))
   ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, b), y1)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, b), y1))))
   ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, c), y1)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, c), y1))))
   ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))
   ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(b, y0), y1)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(b, y0), y1))))
   ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3))))
   ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), a)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, y1), a))))
   ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), b)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, y1), b))))
   ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), c)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, y1), c))))
   ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(a, y0), y1)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(a, y0), y1))))
   ENCARG(cons_f(a, cons_f(b, cons_f(c, a)))) -> c4(ENCARG(cons_f(b, cons_f(c, a))))
   ENCARG(cons_f(a, cons_f(b, cons_f(c, b)))) -> c4(ENCARG(cons_f(b, cons_f(c, b))))
   ENCARG(cons_f(a, cons_f(b, cons_f(c, c)))) -> c4(ENCARG(cons_f(b, cons_f(c, c))))
   ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(c, y1))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(c, y1)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(c, y0), y1)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(c, y0), y1))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, y0))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, y0)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, y0))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, y0)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, y0))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(c, y0)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, a))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(c, a)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, b))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(c, b)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, c))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(c, c)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1)))))

----------------------------------------

(112)
Obligation:
Complexity Dependency Tuples Problem

Rules:
   encArg(a) -> a
   encArg(b) -> b
   encArg(c) -> c
   encArg(cons_f(z0, z1)) -> f(encArg(z0), encArg(z1))
   f(f(f(a, z0), z1), z2) -> f(f(z0, z2), f(z1, z2))
   f(f(b, z0), z1) -> z0
   f(c, z0) -> z0
Tuples:
   F(f(f(a, z0), z1), z2) -> c9(F(f(z0, z2), f(z1, z2)), F(z0, z2), F(z1, z2))
   F(f(b, z0), z1) -> c10
   F(c, z0) -> c11
   ENCARG(cons_f(c, x1)) -> c4(F(c, encArg(x1)), ENCARG(x1))
   ENCODE_F(c, x1) -> c1(F(c, encArg(x1)))
   ENCARG(cons_f(x0, cons_f(x1, a))) -> c4(F(encArg(x0), f(encArg(x1), a)), ENCARG(x0), ENCARG(cons_f(x1, a)))
   ENCARG(cons_f(x0, cons_f(x1, b))) -> c4(F(encArg(x0), f(encArg(x1), b)), ENCARG(x0), ENCARG(cons_f(x1, b)))
   ENCARG(cons_f(x0, cons_f(x1, c))) -> c4(F(encArg(x0), f(encArg(x1), c)), ENCARG(x0), ENCARG(cons_f(x1, c)))
   ENCARG(cons_f(x0, cons_f(x1, cons_f(z0, z1)))) -> c4(F(encArg(x0), f(encArg(x1), f(encArg(z0), encArg(z1)))), ENCARG(x0), ENCARG(cons_f(x1, cons_f(z0, z1))))
   ENCARG(cons_f(x0, cons_f(a, x2))) -> c4(F(encArg(x0), f(a, encArg(x2))), ENCARG(x0), ENCARG(cons_f(a, x2)))
   ENCARG(cons_f(x0, cons_f(b, x2))) -> c4(F(encArg(x0), f(b, encArg(x2))), ENCARG(x0), ENCARG(cons_f(b, x2)))
   ENCARG(cons_f(x0, cons_f(cons_f(z0, z1), x2))) -> c4(F(encArg(x0), f(f(encArg(z0), encArg(z1)), encArg(x2))), ENCARG(x0), ENCARG(cons_f(cons_f(z0, z1), x2)))
   ENCARG(cons_f(cons_f(z0, z1), cons_f(x1, x2))) -> c4(F(f(encArg(z0), encArg(z1)), f(encArg(x1), encArg(x2))), ENCARG(cons_f(z0, z1)), ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(b, cons_f(x1, x2))) -> c4(ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(c, cons_f(x1, x2))) -> c4(F(c, f(encArg(x1), encArg(x2))), ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(cons_f(x0, a), x2)) -> c4(F(f(encArg(x0), a), encArg(x2)), ENCARG(cons_f(x0, a)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, b), x2)) -> c4(F(f(encArg(x0), b), encArg(x2)), ENCARG(cons_f(x0, b)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, c), x2)) -> c4(F(f(encArg(x0), c), encArg(x2)), ENCARG(cons_f(x0, c)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, cons_f(z0, z1)), x2)) -> c4(F(f(encArg(x0), f(encArg(z0), encArg(z1))), encArg(x2)), ENCARG(cons_f(x0, cons_f(z0, z1))), ENCARG(x2))
   ENCARG(cons_f(cons_f(b, x1), x2)) -> c4(F(f(b, encArg(x1)), encArg(x2)), ENCARG(cons_f(b, x1)), ENCARG(x2))
   ENCARG(cons_f(cons_f(cons_f(z0, z1), x1), x2)) -> c4(F(f(f(encArg(z0), encArg(z1)), encArg(x1)), encArg(x2)), ENCARG(cons_f(cons_f(z0, z1), x1)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, x1), a)) -> c4(F(f(encArg(x0), encArg(x1)), a), ENCARG(cons_f(x0, x1)))
   ENCARG(cons_f(cons_f(x0, x1), b)) -> c4(F(f(encArg(x0), encArg(x1)), b), ENCARG(cons_f(x0, x1)))
   ENCARG(cons_f(cons_f(x0, x1), c)) -> c4(F(f(encArg(x0), encArg(x1)), c), ENCARG(cons_f(x0, x1)))
   ENCARG(cons_f(cons_f(a, x1), x2)) -> c4(ENCARG(cons_f(a, x1)), ENCARG(x2))
   ENCARG(cons_f(c, a)) -> c4(F(c, a))
   ENCARG(cons_f(c, b)) -> c4(F(c, b))
   ENCARG(cons_f(c, c)) -> c4(F(c, c))
   ENCODE_F(cons_f(z0, z1), a) -> c1(F(f(encArg(z0), encArg(z1)), a))
   ENCODE_F(cons_f(z0, z1), b) -> c1(F(f(encArg(z0), encArg(z1)), b))
   ENCODE_F(cons_f(z0, z1), c) -> c1(F(f(encArg(z0), encArg(z1)), c))
   ENCODE_F(x0, cons_f(x1, a)) -> c1(F(encArg(x0), f(encArg(x1), a)))
   ENCODE_F(x0, cons_f(x1, b)) -> c1(F(encArg(x0), f(encArg(x1), b)))
   ENCODE_F(x0, cons_f(x1, c)) -> c1(F(encArg(x0), f(encArg(x1), c)))
   ENCODE_F(x0, cons_f(x1, cons_f(z0, z1))) -> c1(F(encArg(x0), f(encArg(x1), f(encArg(z0), encArg(z1)))))
   ENCODE_F(x0, cons_f(a, x2)) -> c1(F(encArg(x0), f(a, encArg(x2))))
   ENCODE_F(x0, cons_f(b, x2)) -> c1(F(encArg(x0), f(b, encArg(x2))))
   ENCODE_F(x0, cons_f(cons_f(z0, z1), x2)) -> c1(F(encArg(x0), f(f(encArg(z0), encArg(z1)), encArg(x2))))
   ENCODE_F(c, cons_f(x1, x2)) -> c1(F(c, f(encArg(x1), encArg(x2))))
   ENCODE_F(cons_f(z0, z1), cons_f(x1, x2)) -> c1(F(f(encArg(z0), encArg(z1)), f(encArg(x1), encArg(x2))))
   ENCODE_F(cons_f(x0, a), x2) -> c1(F(f(encArg(x0), a), encArg(x2)))
   ENCODE_F(cons_f(x0, b), x2) -> c1(F(f(encArg(x0), b), encArg(x2)))
   ENCODE_F(cons_f(x0, c), x2) -> c1(F(f(encArg(x0), c), encArg(x2)))
   ENCODE_F(cons_f(x0, cons_f(z0, z1)), x2) -> c1(F(f(encArg(x0), f(encArg(z0), encArg(z1))), encArg(x2)))
   ENCODE_F(cons_f(b, x1), x2) -> c1(F(f(b, encArg(x1)), encArg(x2)))
   ENCODE_F(cons_f(cons_f(z0, z1), x1), x2) -> c1(F(f(f(encArg(z0), encArg(z1)), encArg(x1)), encArg(x2)))
   ENCARG(cons_f(z0, cons_f(c, z1))) -> c4(F(encArg(z0), encArg(z1)), ENCARG(z0), ENCARG(cons_f(c, z1)))
   ENCARG(cons_f(cons_f(c, z0), z1)) -> c4(F(encArg(z0), encArg(z1)), ENCARG(cons_f(c, z0)), ENCARG(z1))
   ENCODE_F(z0, cons_f(c, z1)) -> c1(F(encArg(z0), encArg(z1)))
   ENCODE_F(cons_f(c, z0), z1) -> c1(F(encArg(z0), encArg(z1)))
   ENCARG(cons_f(a, cons_f(a, y0))) -> c4(ENCARG(cons_f(a, y0)))
   ENCARG(cons_f(a, cons_f(b, y0))) -> c4(ENCARG(cons_f(b, y0)))
   ENCARG(cons_f(a, cons_f(c, y0))) -> c4(ENCARG(cons_f(c, y0)))
   ENCARG(cons_f(a, cons_f(y0, cons_f(y1, a)))) -> c4(ENCARG(cons_f(y0, cons_f(y1, a))))
   ENCARG(cons_f(a, cons_f(y0, cons_f(y1, b)))) -> c4(ENCARG(cons_f(y0, cons_f(y1, b))))
   ENCARG(cons_f(a, cons_f(y0, cons_f(y1, c)))) -> c4(ENCARG(cons_f(y0, cons_f(y1, c))))
   ENCARG(cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))) -> c4(ENCARG(cons_f(y0, cons_f(y1, cons_f(y2, y3)))))
   ENCARG(cons_f(a, cons_f(y0, cons_f(a, y1)))) -> c4(ENCARG(cons_f(y0, cons_f(a, y1))))
   ENCARG(cons_f(a, cons_f(y0, cons_f(b, y1)))) -> c4(ENCARG(cons_f(y0, cons_f(b, y1))))
   ENCARG(cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))) -> c4(ENCARG(cons_f(y0, cons_f(cons_f(y1, y2), y3))))
   ENCARG(cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))) -> c4(ENCARG(cons_f(cons_f(y0, y1), cons_f(y2, y3))))
   ENCARG(cons_f(a, cons_f(a, cons_f(y0, y1)))) -> c4(ENCARG(cons_f(a, cons_f(y0, y1))))
   ENCARG(cons_f(a, cons_f(b, cons_f(y0, y1)))) -> c4(ENCARG(cons_f(b, cons_f(y0, y1))))
   ENCARG(cons_f(a, cons_f(c, cons_f(y0, y1)))) -> c4(ENCARG(cons_f(c, cons_f(y0, y1))))
   ENCARG(cons_f(a, cons_f(cons_f(y0, a), y1))) -> c4(ENCARG(cons_f(cons_f(y0, a), y1)))
   ENCARG(cons_f(a, cons_f(cons_f(y0, b), y1))) -> c4(ENCARG(cons_f(cons_f(y0, b), y1)))
   ENCARG(cons_f(a, cons_f(cons_f(y0, c), y1))) -> c4(ENCARG(cons_f(cons_f(y0, c), y1)))
   ENCARG(cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))) -> c4(ENCARG(cons_f(cons_f(y0, cons_f(y1, y2)), y3)))
   ENCARG(cons_f(a, cons_f(cons_f(b, y0), y1))) -> c4(ENCARG(cons_f(cons_f(b, y0), y1)))
   ENCARG(cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))) -> c4(ENCARG(cons_f(cons_f(cons_f(y0, y1), y2), y3)))
   ENCARG(cons_f(a, cons_f(cons_f(y0, y1), a))) -> c4(ENCARG(cons_f(cons_f(y0, y1), a)))
   ENCARG(cons_f(a, cons_f(cons_f(y0, y1), b))) -> c4(ENCARG(cons_f(cons_f(y0, y1), b)))
   ENCARG(cons_f(a, cons_f(cons_f(y0, y1), c))) -> c4(ENCARG(cons_f(cons_f(y0, y1), c)))
   ENCARG(cons_f(a, cons_f(cons_f(a, y0), y1))) -> c4(ENCARG(cons_f(cons_f(a, y0), y1)))
   ENCARG(cons_f(a, cons_f(c, a))) -> c4(ENCARG(cons_f(c, a)))
   ENCARG(cons_f(a, cons_f(c, b))) -> c4(ENCARG(cons_f(c, b)))
   ENCARG(cons_f(a, cons_f(c, c))) -> c4(ENCARG(cons_f(c, c)))
   ENCARG(cons_f(a, cons_f(y0, cons_f(c, y1)))) -> c4(ENCARG(cons_f(y0, cons_f(c, y1))))
   ENCARG(cons_f(a, cons_f(cons_f(c, y0), y1))) -> c4(ENCARG(cons_f(cons_f(c, y0), y1)))
   ENCARG(cons_f(b, cons_f(b, y0))) -> c4(ENCARG(cons_f(b, y0)))
   ENCARG(cons_f(b, cons_f(c, y0))) -> c4(ENCARG(cons_f(c, y0)))
   ENCARG(cons_f(b, cons_f(y0, cons_f(y1, a)))) -> c4(ENCARG(cons_f(y0, cons_f(y1, a))))
   ENCARG(cons_f(b, cons_f(y0, cons_f(y1, b)))) -> c4(ENCARG(cons_f(y0, cons_f(y1, b))))
   ENCARG(cons_f(b, cons_f(y0, cons_f(y1, c)))) -> c4(ENCARG(cons_f(y0, cons_f(y1, c))))
   ENCARG(cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3))))) -> c4(ENCARG(cons_f(y0, cons_f(y1, cons_f(y2, y3)))))
   ENCARG(cons_f(b, cons_f(y0, cons_f(a, y1)))) -> c4(ENCARG(cons_f(y0, cons_f(a, y1))))
   ENCARG(cons_f(b, cons_f(y0, cons_f(b, y1)))) -> c4(ENCARG(cons_f(y0, cons_f(b, y1))))
   ENCARG(cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3)))) -> c4(ENCARG(cons_f(y0, cons_f(cons_f(y1, y2), y3))))
   ENCARG(cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3)))) -> c4(ENCARG(cons_f(cons_f(y0, y1), cons_f(y2, y3))))
   ENCARG(cons_f(b, cons_f(a, cons_f(y0, y1)))) -> c4(ENCARG(cons_f(a, cons_f(y0, y1))))
   ENCARG(cons_f(b, cons_f(b, cons_f(y0, y1)))) -> c4(ENCARG(cons_f(b, cons_f(y0, y1))))
   ENCARG(cons_f(b, cons_f(c, cons_f(y0, y1)))) -> c4(ENCARG(cons_f(c, cons_f(y0, y1))))
   ENCARG(cons_f(b, cons_f(cons_f(y0, a), y1))) -> c4(ENCARG(cons_f(cons_f(y0, a), y1)))
   ENCARG(cons_f(b, cons_f(cons_f(y0, b), y1))) -> c4(ENCARG(cons_f(cons_f(y0, b), y1)))
   ENCARG(cons_f(b, cons_f(cons_f(y0, c), y1))) -> c4(ENCARG(cons_f(cons_f(y0, c), y1)))
   ENCARG(cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3))) -> c4(ENCARG(cons_f(cons_f(y0, cons_f(y1, y2)), y3)))
   ENCARG(cons_f(b, cons_f(cons_f(b, y0), y1))) -> c4(ENCARG(cons_f(cons_f(b, y0), y1)))
   ENCARG(cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3))) -> c4(ENCARG(cons_f(cons_f(cons_f(y0, y1), y2), y3)))
   ENCARG(cons_f(b, cons_f(cons_f(y0, y1), a))) -> c4(ENCARG(cons_f(cons_f(y0, y1), a)))
   ENCARG(cons_f(b, cons_f(cons_f(y0, y1), b))) -> c4(ENCARG(cons_f(cons_f(y0, y1), b)))
   ENCARG(cons_f(b, cons_f(cons_f(y0, y1), c))) -> c4(ENCARG(cons_f(cons_f(y0, y1), c)))
   ENCARG(cons_f(b, cons_f(cons_f(a, y0), y1))) -> c4(ENCARG(cons_f(cons_f(a, y0), y1)))
   ENCARG(cons_f(b, cons_f(c, a))) -> c4(ENCARG(cons_f(c, a)))
   ENCARG(cons_f(b, cons_f(c, b))) -> c4(ENCARG(cons_f(c, b)))
   ENCARG(cons_f(b, cons_f(c, c))) -> c4(ENCARG(cons_f(c, c)))
   ENCARG(cons_f(b, cons_f(y0, cons_f(c, y1)))) -> c4(ENCARG(cons_f(y0, cons_f(c, y1))))
   ENCARG(cons_f(b, cons_f(cons_f(c, y0), y1))) -> c4(ENCARG(cons_f(cons_f(c, y0), y1)))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, y0)))) -> c4(ENCARG(cons_f(a, cons_f(a, y0))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, y0)))) -> c4(ENCARG(cons_f(a, cons_f(b, y0))))
   ENCARG(cons_f(b, cons_f(a, cons_f(c, y0)))) -> c4(ENCARG(cons_f(a, cons_f(c, y0))))
   ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(y1, a)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(y1, b)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(y1, c)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(a, y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(b, y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(a, cons_f(c, cons_f(y0, y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, a), y1))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, b), y1))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, c), y1))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(b, y0), y1))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, y1), a))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, y1), b))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, y1), c))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(a, y0), y1))))
   ENCARG(cons_f(b, cons_f(a, cons_f(c, a)))) -> c4(ENCARG(cons_f(a, cons_f(c, a))))
   ENCARG(cons_f(b, cons_f(a, cons_f(c, b)))) -> c4(ENCARG(cons_f(a, cons_f(c, b))))
   ENCARG(cons_f(b, cons_f(a, cons_f(c, c)))) -> c4(ENCARG(cons_f(a, cons_f(c, c))))
   ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(c, y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(c, y0), y1))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, y0)))) -> c4(ENCARG(cons_f(a, cons_f(a, y0))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, y0)))) -> c4(ENCARG(cons_f(a, cons_f(b, y0))))
   ENCARG(cons_f(a, cons_f(a, cons_f(c, y0)))) -> c4(ENCARG(cons_f(a, cons_f(c, y0))))
   ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, a))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(y1, a)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, b))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(y1, b)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, c))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(y1, c)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(a, y1))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(a, y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(b, y1))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(b, y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(c, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(a, cons_f(c, cons_f(y0, y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, a), y1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, a), y1))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, b), y1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, b), y1))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, c), y1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, c), y1))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(b, y0), y1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(b, y0), y1))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), a)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, y1), a))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), b)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, y1), b))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), c)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, y1), c))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(a, y0), y1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(a, y0), y1))))
   ENCARG(cons_f(a, cons_f(a, cons_f(c, a)))) -> c4(ENCARG(cons_f(a, cons_f(c, a))))
   ENCARG(cons_f(a, cons_f(a, cons_f(c, b)))) -> c4(ENCARG(cons_f(a, cons_f(c, b))))
   ENCARG(cons_f(a, cons_f(a, cons_f(c, c)))) -> c4(ENCARG(cons_f(a, cons_f(c, c))))
   ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(c, y1))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(c, y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(c, y0), y1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(c, y0), y1))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, y0)))) -> c4(ENCARG(cons_f(b, cons_f(b, y0))))
   ENCARG(cons_f(a, cons_f(b, cons_f(c, y0)))) -> c4(ENCARG(cons_f(b, cons_f(c, y0))))
   ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, a))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(y1, a)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, b))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(y1, b)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, c))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(y1, c)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(a, y1))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(a, y1)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(b, y1))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(b, y1)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3))))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, y1)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(y0, y1)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(c, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(b, cons_f(c, cons_f(y0, y1)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, a), y1)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, a), y1))))
   ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, b), y1)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, b), y1))))
   ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, c), y1)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, c), y1))))
   ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))
   ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(b, y0), y1)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(b, y0), y1))))
   ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3))))
   ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), a)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, y1), a))))
   ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), b)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, y1), b))))
   ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), c)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, y1), c))))
   ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(a, y0), y1)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(a, y0), y1))))
   ENCARG(cons_f(a, cons_f(b, cons_f(c, a)))) -> c4(ENCARG(cons_f(b, cons_f(c, a))))
   ENCARG(cons_f(a, cons_f(b, cons_f(c, b)))) -> c4(ENCARG(cons_f(b, cons_f(c, b))))
   ENCARG(cons_f(a, cons_f(b, cons_f(c, c)))) -> c4(ENCARG(cons_f(b, cons_f(c, c))))
   ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(c, y1))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(c, y1)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(c, y0), y1)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(c, y0), y1))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, y0))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, y0)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, y0))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, y0)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, y0))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(c, y0)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, a))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(c, a)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, b))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(c, b)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, c))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(c, c)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1)))))
S tuples:
   F(f(f(a, z0), z1), z2) -> c9(F(f(z0, z2), f(z1, z2)), F(z0, z2), F(z1, z2))
   F(f(b, z0), z1) -> c10
   F(c, z0) -> c11
K tuples:none
Defined Rule Symbols:   encArg_1, f_2

Defined Pair Symbols:   F_2, ENCARG_1, ENCODE_F_2

Compound Symbols:   c9_3, c10, c11, c4_2, c1_1, c4_3, c4_1


----------------------------------------

(113) CdtForwardInstantiationProof (BOTH BOUNDS(ID, ID))
Use forward instantiation to replace ENCARG(cons_f(b, cons_f(x1, x2))) -> c4(ENCARG(cons_f(x1, x2))) by 
   ENCARG(cons_f(b, cons_f(c, z1))) -> c4(ENCARG(cons_f(c, z1)))
   ENCARG(cons_f(b, cons_f(z0, cons_f(y1, a)))) -> c4(ENCARG(cons_f(z0, cons_f(y1, a))))
   ENCARG(cons_f(b, cons_f(z0, cons_f(y1, b)))) -> c4(ENCARG(cons_f(z0, cons_f(y1, b))))
   ENCARG(cons_f(b, cons_f(z0, cons_f(y1, c)))) -> c4(ENCARG(cons_f(z0, cons_f(y1, c))))
   ENCARG(cons_f(b, cons_f(z0, cons_f(y1, cons_f(y2, y3))))) -> c4(ENCARG(cons_f(z0, cons_f(y1, cons_f(y2, y3)))))
   ENCARG(cons_f(b, cons_f(z0, cons_f(a, y1)))) -> c4(ENCARG(cons_f(z0, cons_f(a, y1))))
   ENCARG(cons_f(b, cons_f(z0, cons_f(b, y1)))) -> c4(ENCARG(cons_f(z0, cons_f(b, y1))))
   ENCARG(cons_f(b, cons_f(z0, cons_f(cons_f(y1, y2), y3)))) -> c4(ENCARG(cons_f(z0, cons_f(cons_f(y1, y2), y3))))
   ENCARG(cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3)))) -> c4(ENCARG(cons_f(cons_f(y0, y1), cons_f(y2, y3))))
   ENCARG(cons_f(b, cons_f(b, cons_f(y0, y1)))) -> c4(ENCARG(cons_f(b, cons_f(y0, y1))))
   ENCARG(cons_f(b, cons_f(c, cons_f(y0, y1)))) -> c4(ENCARG(cons_f(c, cons_f(y0, y1))))
   ENCARG(cons_f(b, cons_f(cons_f(y0, a), z1))) -> c4(ENCARG(cons_f(cons_f(y0, a), z1)))
   ENCARG(cons_f(b, cons_f(cons_f(y0, b), z1))) -> c4(ENCARG(cons_f(cons_f(y0, b), z1)))
   ENCARG(cons_f(b, cons_f(cons_f(y0, c), z1))) -> c4(ENCARG(cons_f(cons_f(y0, c), z1)))
   ENCARG(cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), z1))) -> c4(ENCARG(cons_f(cons_f(y0, cons_f(y1, y2)), z1)))
   ENCARG(cons_f(b, cons_f(cons_f(b, y0), z1))) -> c4(ENCARG(cons_f(cons_f(b, y0), z1)))
   ENCARG(cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), z1))) -> c4(ENCARG(cons_f(cons_f(cons_f(y0, y1), y2), z1)))
   ENCARG(cons_f(b, cons_f(cons_f(y0, y1), a))) -> c4(ENCARG(cons_f(cons_f(y0, y1), a)))
   ENCARG(cons_f(b, cons_f(cons_f(y0, y1), b))) -> c4(ENCARG(cons_f(cons_f(y0, y1), b)))
   ENCARG(cons_f(b, cons_f(cons_f(y0, y1), c))) -> c4(ENCARG(cons_f(cons_f(y0, y1), c)))
   ENCARG(cons_f(b, cons_f(cons_f(a, y0), z1))) -> c4(ENCARG(cons_f(cons_f(a, y0), z1)))
   ENCARG(cons_f(b, cons_f(c, a))) -> c4(ENCARG(cons_f(c, a)))
   ENCARG(cons_f(b, cons_f(c, b))) -> c4(ENCARG(cons_f(c, b)))
   ENCARG(cons_f(b, cons_f(c, c))) -> c4(ENCARG(cons_f(c, c)))
   ENCARG(cons_f(b, cons_f(z0, cons_f(c, y1)))) -> c4(ENCARG(cons_f(z0, cons_f(c, y1))))
   ENCARG(cons_f(b, cons_f(cons_f(c, y0), z1))) -> c4(ENCARG(cons_f(cons_f(c, y0), z1)))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, y0)))) -> c4(ENCARG(cons_f(a, cons_f(a, y0))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, y0)))) -> c4(ENCARG(cons_f(a, cons_f(b, y0))))
   ENCARG(cons_f(b, cons_f(a, cons_f(c, y0)))) -> c4(ENCARG(cons_f(a, cons_f(c, y0))))
   ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(y1, a)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(y1, b)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(y1, c)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(a, y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(b, y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(a, cons_f(c, cons_f(y0, y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, a), y1))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, b), y1))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, c), y1))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(b, y0), y1))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, y1), a))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, y1), b))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, y1), c))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(a, y0), y1))))
   ENCARG(cons_f(b, cons_f(a, cons_f(c, a)))) -> c4(ENCARG(cons_f(a, cons_f(c, a))))
   ENCARG(cons_f(b, cons_f(a, cons_f(c, b)))) -> c4(ENCARG(cons_f(a, cons_f(c, b))))
   ENCARG(cons_f(b, cons_f(a, cons_f(c, c)))) -> c4(ENCARG(cons_f(a, cons_f(c, c))))
   ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(c, y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(c, y0), y1))))
   ENCARG(cons_f(b, cons_f(b, cons_f(b, y0)))) -> c4(ENCARG(cons_f(b, cons_f(b, y0))))
   ENCARG(cons_f(b, cons_f(b, cons_f(c, y0)))) -> c4(ENCARG(cons_f(b, cons_f(c, y0))))
   ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(y1, a))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(y1, a)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(y1, b))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(y1, b)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(y1, c))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(y1, c)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))
   ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(a, y1))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(a, y1)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(b, y1))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(b, y1)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3))))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, y1)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(b, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(y0, y1)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(c, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(b, cons_f(c, cons_f(y0, y1)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, a), y1)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, a), y1))))
   ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, b), y1)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, b), y1))))
   ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, c), y1)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, c), y1))))
   ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))
   ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(b, y0), y1)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(b, y0), y1))))
   ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3))))
   ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, y1), a)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, y1), a))))
   ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, y1), b)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, y1), b))))
   ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, y1), c)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, y1), c))))
   ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(a, y0), y1)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(a, y0), y1))))
   ENCARG(cons_f(b, cons_f(b, cons_f(c, a)))) -> c4(ENCARG(cons_f(b, cons_f(c, a))))
   ENCARG(cons_f(b, cons_f(b, cons_f(c, b)))) -> c4(ENCARG(cons_f(b, cons_f(c, b))))
   ENCARG(cons_f(b, cons_f(b, cons_f(c, c)))) -> c4(ENCARG(cons_f(b, cons_f(c, c))))
   ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(c, y1))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(c, y1)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(c, y0), y1)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(c, y0), y1))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(a, y0))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, y0)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(b, y0))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, y0)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(c, y0))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(c, y0)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a))))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b))))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c))))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1))))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1))))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1))))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1))))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1))))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(c, a))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(c, a)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(c, b))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(c, b)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(c, c))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(c, c)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1))))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(a, y0))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(a, y0)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(b, y0))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, y0)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(c, y0))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(c, y0)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, a)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, a))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, b)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, b))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, c)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, c))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(a, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(a, y1))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(b, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(b, y1))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(a, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(y0, y1))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(b, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(y0, y1))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(c, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(c, cons_f(y0, y1))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, a), y1))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, a), y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, b), y1))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, b), y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, c), y1))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, c), y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(b, y0), y1))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(b, y0), y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), a))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), a)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), b))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), b)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), c))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), c)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(a, y0), y1))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(a, y0), y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(c, a))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(c, a)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(c, b))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(c, b)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(c, c))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(c, c)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(c, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(c, y1))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(c, y0), y1))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(c, y0), y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(b, y0))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, y0)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(c, y0))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(c, y0)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, a)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, a))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, b)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, b))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, c)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, c))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(a, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(a, y1))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(b, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(b, y1))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, y1))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(b, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(y0, y1))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(c, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(c, cons_f(y0, y1))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, a), y1))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, a), y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, b), y1))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, b), y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, c), y1))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, c), y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(b, y0), y1))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(b, y0), y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), a))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), a)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), b))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), b)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), c))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), c)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(a, y0), y1))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(a, y0), y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(c, a))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(c, a)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(c, b))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(c, b)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(c, c))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(c, c)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(c, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(c, y1))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(c, y0), y1))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(c, y0), y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(a, y0)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, y0))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(b, y0)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, y0))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, y0)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, y0))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a)))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b)))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c)))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1)))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1)))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1)))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1)))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1)))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, a)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, a))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, b)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, b))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, c)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, c))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1)))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1))))))

----------------------------------------

(114)
Obligation:
Complexity Dependency Tuples Problem

Rules:
   encArg(a) -> a
   encArg(b) -> b
   encArg(c) -> c
   encArg(cons_f(z0, z1)) -> f(encArg(z0), encArg(z1))
   f(f(f(a, z0), z1), z2) -> f(f(z0, z2), f(z1, z2))
   f(f(b, z0), z1) -> z0
   f(c, z0) -> z0
Tuples:
   F(f(f(a, z0), z1), z2) -> c9(F(f(z0, z2), f(z1, z2)), F(z0, z2), F(z1, z2))
   F(f(b, z0), z1) -> c10
   F(c, z0) -> c11
   ENCARG(cons_f(c, x1)) -> c4(F(c, encArg(x1)), ENCARG(x1))
   ENCODE_F(c, x1) -> c1(F(c, encArg(x1)))
   ENCARG(cons_f(x0, cons_f(x1, a))) -> c4(F(encArg(x0), f(encArg(x1), a)), ENCARG(x0), ENCARG(cons_f(x1, a)))
   ENCARG(cons_f(x0, cons_f(x1, b))) -> c4(F(encArg(x0), f(encArg(x1), b)), ENCARG(x0), ENCARG(cons_f(x1, b)))
   ENCARG(cons_f(x0, cons_f(x1, c))) -> c4(F(encArg(x0), f(encArg(x1), c)), ENCARG(x0), ENCARG(cons_f(x1, c)))
   ENCARG(cons_f(x0, cons_f(x1, cons_f(z0, z1)))) -> c4(F(encArg(x0), f(encArg(x1), f(encArg(z0), encArg(z1)))), ENCARG(x0), ENCARG(cons_f(x1, cons_f(z0, z1))))
   ENCARG(cons_f(x0, cons_f(a, x2))) -> c4(F(encArg(x0), f(a, encArg(x2))), ENCARG(x0), ENCARG(cons_f(a, x2)))
   ENCARG(cons_f(x0, cons_f(b, x2))) -> c4(F(encArg(x0), f(b, encArg(x2))), ENCARG(x0), ENCARG(cons_f(b, x2)))
   ENCARG(cons_f(x0, cons_f(cons_f(z0, z1), x2))) -> c4(F(encArg(x0), f(f(encArg(z0), encArg(z1)), encArg(x2))), ENCARG(x0), ENCARG(cons_f(cons_f(z0, z1), x2)))
   ENCARG(cons_f(cons_f(z0, z1), cons_f(x1, x2))) -> c4(F(f(encArg(z0), encArg(z1)), f(encArg(x1), encArg(x2))), ENCARG(cons_f(z0, z1)), ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(c, cons_f(x1, x2))) -> c4(F(c, f(encArg(x1), encArg(x2))), ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(cons_f(x0, a), x2)) -> c4(F(f(encArg(x0), a), encArg(x2)), ENCARG(cons_f(x0, a)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, b), x2)) -> c4(F(f(encArg(x0), b), encArg(x2)), ENCARG(cons_f(x0, b)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, c), x2)) -> c4(F(f(encArg(x0), c), encArg(x2)), ENCARG(cons_f(x0, c)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, cons_f(z0, z1)), x2)) -> c4(F(f(encArg(x0), f(encArg(z0), encArg(z1))), encArg(x2)), ENCARG(cons_f(x0, cons_f(z0, z1))), ENCARG(x2))
   ENCARG(cons_f(cons_f(b, x1), x2)) -> c4(F(f(b, encArg(x1)), encArg(x2)), ENCARG(cons_f(b, x1)), ENCARG(x2))
   ENCARG(cons_f(cons_f(cons_f(z0, z1), x1), x2)) -> c4(F(f(f(encArg(z0), encArg(z1)), encArg(x1)), encArg(x2)), ENCARG(cons_f(cons_f(z0, z1), x1)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, x1), a)) -> c4(F(f(encArg(x0), encArg(x1)), a), ENCARG(cons_f(x0, x1)))
   ENCARG(cons_f(cons_f(x0, x1), b)) -> c4(F(f(encArg(x0), encArg(x1)), b), ENCARG(cons_f(x0, x1)))
   ENCARG(cons_f(cons_f(x0, x1), c)) -> c4(F(f(encArg(x0), encArg(x1)), c), ENCARG(cons_f(x0, x1)))
   ENCARG(cons_f(cons_f(a, x1), x2)) -> c4(ENCARG(cons_f(a, x1)), ENCARG(x2))
   ENCARG(cons_f(c, a)) -> c4(F(c, a))
   ENCARG(cons_f(c, b)) -> c4(F(c, b))
   ENCARG(cons_f(c, c)) -> c4(F(c, c))
   ENCODE_F(cons_f(z0, z1), a) -> c1(F(f(encArg(z0), encArg(z1)), a))
   ENCODE_F(cons_f(z0, z1), b) -> c1(F(f(encArg(z0), encArg(z1)), b))
   ENCODE_F(cons_f(z0, z1), c) -> c1(F(f(encArg(z0), encArg(z1)), c))
   ENCODE_F(x0, cons_f(x1, a)) -> c1(F(encArg(x0), f(encArg(x1), a)))
   ENCODE_F(x0, cons_f(x1, b)) -> c1(F(encArg(x0), f(encArg(x1), b)))
   ENCODE_F(x0, cons_f(x1, c)) -> c1(F(encArg(x0), f(encArg(x1), c)))
   ENCODE_F(x0, cons_f(x1, cons_f(z0, z1))) -> c1(F(encArg(x0), f(encArg(x1), f(encArg(z0), encArg(z1)))))
   ENCODE_F(x0, cons_f(a, x2)) -> c1(F(encArg(x0), f(a, encArg(x2))))
   ENCODE_F(x0, cons_f(b, x2)) -> c1(F(encArg(x0), f(b, encArg(x2))))
   ENCODE_F(x0, cons_f(cons_f(z0, z1), x2)) -> c1(F(encArg(x0), f(f(encArg(z0), encArg(z1)), encArg(x2))))
   ENCODE_F(c, cons_f(x1, x2)) -> c1(F(c, f(encArg(x1), encArg(x2))))
   ENCODE_F(cons_f(z0, z1), cons_f(x1, x2)) -> c1(F(f(encArg(z0), encArg(z1)), f(encArg(x1), encArg(x2))))
   ENCODE_F(cons_f(x0, a), x2) -> c1(F(f(encArg(x0), a), encArg(x2)))
   ENCODE_F(cons_f(x0, b), x2) -> c1(F(f(encArg(x0), b), encArg(x2)))
   ENCODE_F(cons_f(x0, c), x2) -> c1(F(f(encArg(x0), c), encArg(x2)))
   ENCODE_F(cons_f(x0, cons_f(z0, z1)), x2) -> c1(F(f(encArg(x0), f(encArg(z0), encArg(z1))), encArg(x2)))
   ENCODE_F(cons_f(b, x1), x2) -> c1(F(f(b, encArg(x1)), encArg(x2)))
   ENCODE_F(cons_f(cons_f(z0, z1), x1), x2) -> c1(F(f(f(encArg(z0), encArg(z1)), encArg(x1)), encArg(x2)))
   ENCARG(cons_f(z0, cons_f(c, z1))) -> c4(F(encArg(z0), encArg(z1)), ENCARG(z0), ENCARG(cons_f(c, z1)))
   ENCARG(cons_f(cons_f(c, z0), z1)) -> c4(F(encArg(z0), encArg(z1)), ENCARG(cons_f(c, z0)), ENCARG(z1))
   ENCODE_F(z0, cons_f(c, z1)) -> c1(F(encArg(z0), encArg(z1)))
   ENCODE_F(cons_f(c, z0), z1) -> c1(F(encArg(z0), encArg(z1)))
   ENCARG(cons_f(a, cons_f(a, y0))) -> c4(ENCARG(cons_f(a, y0)))
   ENCARG(cons_f(a, cons_f(b, y0))) -> c4(ENCARG(cons_f(b, y0)))
   ENCARG(cons_f(a, cons_f(c, y0))) -> c4(ENCARG(cons_f(c, y0)))
   ENCARG(cons_f(a, cons_f(y0, cons_f(y1, a)))) -> c4(ENCARG(cons_f(y0, cons_f(y1, a))))
   ENCARG(cons_f(a, cons_f(y0, cons_f(y1, b)))) -> c4(ENCARG(cons_f(y0, cons_f(y1, b))))
   ENCARG(cons_f(a, cons_f(y0, cons_f(y1, c)))) -> c4(ENCARG(cons_f(y0, cons_f(y1, c))))
   ENCARG(cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))) -> c4(ENCARG(cons_f(y0, cons_f(y1, cons_f(y2, y3)))))
   ENCARG(cons_f(a, cons_f(y0, cons_f(a, y1)))) -> c4(ENCARG(cons_f(y0, cons_f(a, y1))))
   ENCARG(cons_f(a, cons_f(y0, cons_f(b, y1)))) -> c4(ENCARG(cons_f(y0, cons_f(b, y1))))
   ENCARG(cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))) -> c4(ENCARG(cons_f(y0, cons_f(cons_f(y1, y2), y3))))
   ENCARG(cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))) -> c4(ENCARG(cons_f(cons_f(y0, y1), cons_f(y2, y3))))
   ENCARG(cons_f(a, cons_f(a, cons_f(y0, y1)))) -> c4(ENCARG(cons_f(a, cons_f(y0, y1))))
   ENCARG(cons_f(a, cons_f(b, cons_f(y0, y1)))) -> c4(ENCARG(cons_f(b, cons_f(y0, y1))))
   ENCARG(cons_f(a, cons_f(c, cons_f(y0, y1)))) -> c4(ENCARG(cons_f(c, cons_f(y0, y1))))
   ENCARG(cons_f(a, cons_f(cons_f(y0, a), y1))) -> c4(ENCARG(cons_f(cons_f(y0, a), y1)))
   ENCARG(cons_f(a, cons_f(cons_f(y0, b), y1))) -> c4(ENCARG(cons_f(cons_f(y0, b), y1)))
   ENCARG(cons_f(a, cons_f(cons_f(y0, c), y1))) -> c4(ENCARG(cons_f(cons_f(y0, c), y1)))
   ENCARG(cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))) -> c4(ENCARG(cons_f(cons_f(y0, cons_f(y1, y2)), y3)))
   ENCARG(cons_f(a, cons_f(cons_f(b, y0), y1))) -> c4(ENCARG(cons_f(cons_f(b, y0), y1)))
   ENCARG(cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))) -> c4(ENCARG(cons_f(cons_f(cons_f(y0, y1), y2), y3)))
   ENCARG(cons_f(a, cons_f(cons_f(y0, y1), a))) -> c4(ENCARG(cons_f(cons_f(y0, y1), a)))
   ENCARG(cons_f(a, cons_f(cons_f(y0, y1), b))) -> c4(ENCARG(cons_f(cons_f(y0, y1), b)))
   ENCARG(cons_f(a, cons_f(cons_f(y0, y1), c))) -> c4(ENCARG(cons_f(cons_f(y0, y1), c)))
   ENCARG(cons_f(a, cons_f(cons_f(a, y0), y1))) -> c4(ENCARG(cons_f(cons_f(a, y0), y1)))
   ENCARG(cons_f(a, cons_f(c, a))) -> c4(ENCARG(cons_f(c, a)))
   ENCARG(cons_f(a, cons_f(c, b))) -> c4(ENCARG(cons_f(c, b)))
   ENCARG(cons_f(a, cons_f(c, c))) -> c4(ENCARG(cons_f(c, c)))
   ENCARG(cons_f(a, cons_f(y0, cons_f(c, y1)))) -> c4(ENCARG(cons_f(y0, cons_f(c, y1))))
   ENCARG(cons_f(a, cons_f(cons_f(c, y0), y1))) -> c4(ENCARG(cons_f(cons_f(c, y0), y1)))
   ENCARG(cons_f(b, cons_f(b, y0))) -> c4(ENCARG(cons_f(b, y0)))
   ENCARG(cons_f(b, cons_f(c, y0))) -> c4(ENCARG(cons_f(c, y0)))
   ENCARG(cons_f(b, cons_f(y0, cons_f(y1, a)))) -> c4(ENCARG(cons_f(y0, cons_f(y1, a))))
   ENCARG(cons_f(b, cons_f(y0, cons_f(y1, b)))) -> c4(ENCARG(cons_f(y0, cons_f(y1, b))))
   ENCARG(cons_f(b, cons_f(y0, cons_f(y1, c)))) -> c4(ENCARG(cons_f(y0, cons_f(y1, c))))
   ENCARG(cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3))))) -> c4(ENCARG(cons_f(y0, cons_f(y1, cons_f(y2, y3)))))
   ENCARG(cons_f(b, cons_f(y0, cons_f(a, y1)))) -> c4(ENCARG(cons_f(y0, cons_f(a, y1))))
   ENCARG(cons_f(b, cons_f(y0, cons_f(b, y1)))) -> c4(ENCARG(cons_f(y0, cons_f(b, y1))))
   ENCARG(cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3)))) -> c4(ENCARG(cons_f(y0, cons_f(cons_f(y1, y2), y3))))
   ENCARG(cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3)))) -> c4(ENCARG(cons_f(cons_f(y0, y1), cons_f(y2, y3))))
   ENCARG(cons_f(b, cons_f(a, cons_f(y0, y1)))) -> c4(ENCARG(cons_f(a, cons_f(y0, y1))))
   ENCARG(cons_f(b, cons_f(b, cons_f(y0, y1)))) -> c4(ENCARG(cons_f(b, cons_f(y0, y1))))
   ENCARG(cons_f(b, cons_f(c, cons_f(y0, y1)))) -> c4(ENCARG(cons_f(c, cons_f(y0, y1))))
   ENCARG(cons_f(b, cons_f(cons_f(y0, a), y1))) -> c4(ENCARG(cons_f(cons_f(y0, a), y1)))
   ENCARG(cons_f(b, cons_f(cons_f(y0, b), y1))) -> c4(ENCARG(cons_f(cons_f(y0, b), y1)))
   ENCARG(cons_f(b, cons_f(cons_f(y0, c), y1))) -> c4(ENCARG(cons_f(cons_f(y0, c), y1)))
   ENCARG(cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3))) -> c4(ENCARG(cons_f(cons_f(y0, cons_f(y1, y2)), y3)))
   ENCARG(cons_f(b, cons_f(cons_f(b, y0), y1))) -> c4(ENCARG(cons_f(cons_f(b, y0), y1)))
   ENCARG(cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3))) -> c4(ENCARG(cons_f(cons_f(cons_f(y0, y1), y2), y3)))
   ENCARG(cons_f(b, cons_f(cons_f(y0, y1), a))) -> c4(ENCARG(cons_f(cons_f(y0, y1), a)))
   ENCARG(cons_f(b, cons_f(cons_f(y0, y1), b))) -> c4(ENCARG(cons_f(cons_f(y0, y1), b)))
   ENCARG(cons_f(b, cons_f(cons_f(y0, y1), c))) -> c4(ENCARG(cons_f(cons_f(y0, y1), c)))
   ENCARG(cons_f(b, cons_f(cons_f(a, y0), y1))) -> c4(ENCARG(cons_f(cons_f(a, y0), y1)))
   ENCARG(cons_f(b, cons_f(c, a))) -> c4(ENCARG(cons_f(c, a)))
   ENCARG(cons_f(b, cons_f(c, b))) -> c4(ENCARG(cons_f(c, b)))
   ENCARG(cons_f(b, cons_f(c, c))) -> c4(ENCARG(cons_f(c, c)))
   ENCARG(cons_f(b, cons_f(y0, cons_f(c, y1)))) -> c4(ENCARG(cons_f(y0, cons_f(c, y1))))
   ENCARG(cons_f(b, cons_f(cons_f(c, y0), y1))) -> c4(ENCARG(cons_f(cons_f(c, y0), y1)))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, y0)))) -> c4(ENCARG(cons_f(a, cons_f(a, y0))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, y0)))) -> c4(ENCARG(cons_f(a, cons_f(b, y0))))
   ENCARG(cons_f(b, cons_f(a, cons_f(c, y0)))) -> c4(ENCARG(cons_f(a, cons_f(c, y0))))
   ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(y1, a)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(y1, b)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(y1, c)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(a, y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(b, y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(a, cons_f(c, cons_f(y0, y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, a), y1))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, b), y1))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, c), y1))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(b, y0), y1))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, y1), a))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, y1), b))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, y1), c))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(a, y0), y1))))
   ENCARG(cons_f(b, cons_f(a, cons_f(c, a)))) -> c4(ENCARG(cons_f(a, cons_f(c, a))))
   ENCARG(cons_f(b, cons_f(a, cons_f(c, b)))) -> c4(ENCARG(cons_f(a, cons_f(c, b))))
   ENCARG(cons_f(b, cons_f(a, cons_f(c, c)))) -> c4(ENCARG(cons_f(a, cons_f(c, c))))
   ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(c, y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(c, y0), y1))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, y0)))) -> c4(ENCARG(cons_f(a, cons_f(a, y0))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, y0)))) -> c4(ENCARG(cons_f(a, cons_f(b, y0))))
   ENCARG(cons_f(a, cons_f(a, cons_f(c, y0)))) -> c4(ENCARG(cons_f(a, cons_f(c, y0))))
   ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, a))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(y1, a)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, b))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(y1, b)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, c))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(y1, c)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(a, y1))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(a, y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(b, y1))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(b, y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(c, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(a, cons_f(c, cons_f(y0, y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, a), y1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, a), y1))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, b), y1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, b), y1))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, c), y1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, c), y1))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(b, y0), y1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(b, y0), y1))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), a)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, y1), a))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), b)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, y1), b))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), c)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, y1), c))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(a, y0), y1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(a, y0), y1))))
   ENCARG(cons_f(a, cons_f(a, cons_f(c, a)))) -> c4(ENCARG(cons_f(a, cons_f(c, a))))
   ENCARG(cons_f(a, cons_f(a, cons_f(c, b)))) -> c4(ENCARG(cons_f(a, cons_f(c, b))))
   ENCARG(cons_f(a, cons_f(a, cons_f(c, c)))) -> c4(ENCARG(cons_f(a, cons_f(c, c))))
   ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(c, y1))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(c, y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(c, y0), y1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(c, y0), y1))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, y0)))) -> c4(ENCARG(cons_f(b, cons_f(b, y0))))
   ENCARG(cons_f(a, cons_f(b, cons_f(c, y0)))) -> c4(ENCARG(cons_f(b, cons_f(c, y0))))
   ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, a))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(y1, a)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, b))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(y1, b)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, c))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(y1, c)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(a, y1))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(a, y1)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(b, y1))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(b, y1)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3))))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, y1)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(y0, y1)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(c, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(b, cons_f(c, cons_f(y0, y1)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, a), y1)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, a), y1))))
   ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, b), y1)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, b), y1))))
   ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, c), y1)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, c), y1))))
   ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))
   ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(b, y0), y1)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(b, y0), y1))))
   ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3))))
   ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), a)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, y1), a))))
   ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), b)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, y1), b))))
   ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), c)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, y1), c))))
   ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(a, y0), y1)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(a, y0), y1))))
   ENCARG(cons_f(a, cons_f(b, cons_f(c, a)))) -> c4(ENCARG(cons_f(b, cons_f(c, a))))
   ENCARG(cons_f(a, cons_f(b, cons_f(c, b)))) -> c4(ENCARG(cons_f(b, cons_f(c, b))))
   ENCARG(cons_f(a, cons_f(b, cons_f(c, c)))) -> c4(ENCARG(cons_f(b, cons_f(c, c))))
   ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(c, y1))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(c, y1)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(c, y0), y1)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(c, y0), y1))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, y0))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, y0)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, y0))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, y0)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, y0))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(c, y0)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, a))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(c, a)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, b))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(c, b)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, c))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(c, c)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(b, y0)))) -> c4(ENCARG(cons_f(b, cons_f(b, y0))))
   ENCARG(cons_f(b, cons_f(b, cons_f(c, y0)))) -> c4(ENCARG(cons_f(b, cons_f(c, y0))))
   ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(y1, a))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(y1, a)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(y1, b))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(y1, b)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(y1, c))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(y1, c)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))
   ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(a, y1))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(a, y1)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(b, y1))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(b, y1)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3))))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, y1)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(b, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(y0, y1)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(c, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(b, cons_f(c, cons_f(y0, y1)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, a), y1)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, a), y1))))
   ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, b), y1)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, b), y1))))
   ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, c), y1)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, c), y1))))
   ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))
   ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(b, y0), y1)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(b, y0), y1))))
   ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3))))
   ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, y1), a)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, y1), a))))
   ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, y1), b)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, y1), b))))
   ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, y1), c)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, y1), c))))
   ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(a, y0), y1)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(a, y0), y1))))
   ENCARG(cons_f(b, cons_f(b, cons_f(c, a)))) -> c4(ENCARG(cons_f(b, cons_f(c, a))))
   ENCARG(cons_f(b, cons_f(b, cons_f(c, b)))) -> c4(ENCARG(cons_f(b, cons_f(c, b))))
   ENCARG(cons_f(b, cons_f(b, cons_f(c, c)))) -> c4(ENCARG(cons_f(b, cons_f(c, c))))
   ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(c, y1))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(c, y1)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(c, y0), y1)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(c, y0), y1))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(a, y0))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, y0)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(b, y0))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, y0)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(c, y0))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(c, y0)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a))))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b))))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c))))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1))))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1))))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1))))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1))))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1))))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(c, a))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(c, a)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(c, b))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(c, b)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(c, c))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(c, c)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1))))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(a, y0))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(a, y0)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(b, y0))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, y0)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(c, y0))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(c, y0)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, a)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, a))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, b)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, b))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, c)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, c))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(a, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(a, y1))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(b, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(b, y1))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(a, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(y0, y1))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(b, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(y0, y1))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(c, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(c, cons_f(y0, y1))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, a), y1))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, a), y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, b), y1))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, b), y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, c), y1))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, c), y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(b, y0), y1))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(b, y0), y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), a))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), a)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), b))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), b)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), c))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), c)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(a, y0), y1))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(a, y0), y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(c, a))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(c, a)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(c, b))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(c, b)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(c, c))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(c, c)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(c, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(c, y1))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(c, y0), y1))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(c, y0), y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(b, y0))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, y0)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(c, y0))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(c, y0)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, a)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, a))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, b)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, b))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, c)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, c))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(a, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(a, y1))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(b, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(b, y1))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, y1))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(b, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(y0, y1))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(c, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(c, cons_f(y0, y1))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, a), y1))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, a), y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, b), y1))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, b), y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, c), y1))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, c), y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(b, y0), y1))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(b, y0), y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), a))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), a)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), b))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), b)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), c))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), c)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(a, y0), y1))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(a, y0), y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(c, a))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(c, a)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(c, b))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(c, b)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(c, c))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(c, c)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(c, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(c, y1))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(c, y0), y1))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(c, y0), y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(a, y0)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, y0))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(b, y0)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, y0))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, y0)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, y0))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a)))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b)))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c)))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1)))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1)))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1)))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1)))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1)))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, a)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, a))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, b)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, b))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, c)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, c))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1)))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1))))))
S tuples:
   F(f(f(a, z0), z1), z2) -> c9(F(f(z0, z2), f(z1, z2)), F(z0, z2), F(z1, z2))
   F(f(b, z0), z1) -> c10
   F(c, z0) -> c11
K tuples:none
Defined Rule Symbols:   encArg_1, f_2

Defined Pair Symbols:   F_2, ENCARG_1, ENCODE_F_2

Compound Symbols:   c9_3, c10, c11, c4_2, c1_1, c4_3, c4_1


----------------------------------------

(115) CdtForwardInstantiationProof (BOTH BOUNDS(ID, ID))
Use forward instantiation to replace ENCARG(cons_f(cons_f(a, x1), x2)) -> c4(ENCARG(cons_f(a, x1)), ENCARG(x2)) by 
   ENCARG(cons_f(cons_f(a, z0), cons_f(c, y0))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(c, y0)))
   ENCARG(cons_f(cons_f(a, cons_f(y1, a)), z1)) -> c4(ENCARG(cons_f(a, cons_f(y1, a))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(y0, cons_f(y1, a)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(y0, cons_f(y1, a))))
   ENCARG(cons_f(cons_f(a, cons_f(y1, b)), z1)) -> c4(ENCARG(cons_f(a, cons_f(y1, b))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(y0, cons_f(y1, b)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(y0, cons_f(y1, b))))
   ENCARG(cons_f(cons_f(a, cons_f(y1, c)), z1)) -> c4(ENCARG(cons_f(a, cons_f(y1, c))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(y0, cons_f(y1, c)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(y0, cons_f(y1, c))))
   ENCARG(cons_f(cons_f(a, cons_f(y1, cons_f(y2, y3))), z1)) -> c4(ENCARG(cons_f(a, cons_f(y1, cons_f(y2, y3)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(y0, cons_f(y1, cons_f(y2, y3))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(y0, cons_f(y1, cons_f(y2, y3)))))
   ENCARG(cons_f(cons_f(a, cons_f(a, y1)), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, y1))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(y0, cons_f(a, y1)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(y0, cons_f(a, y1))))
   ENCARG(cons_f(cons_f(a, cons_f(b, y1)), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, y1))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(y0, cons_f(b, y1)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(y0, cons_f(b, y1))))
   ENCARG(cons_f(cons_f(a, cons_f(cons_f(y1, y2), y3)), z1)) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y1, y2), y3))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(y0, cons_f(cons_f(y1, y2), y3)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(y0, cons_f(cons_f(y1, y2), y3))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(cons_f(y0, y1), cons_f(y2, y3)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(cons_f(y0, y1), cons_f(y2, y3))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(c, cons_f(y0, y1)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(c, cons_f(y0, y1))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(cons_f(y0, a), y1))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(cons_f(y0, a), y1)))
   ENCARG(cons_f(cons_f(a, z0), cons_f(cons_f(y0, b), y1))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(cons_f(y0, b), y1)))
   ENCARG(cons_f(cons_f(a, z0), cons_f(cons_f(y0, c), y1))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(cons_f(y0, c), y1)))
   ENCARG(cons_f(cons_f(a, z0), cons_f(cons_f(y0, cons_f(y1, y2)), y3))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(cons_f(y0, cons_f(y1, y2)), y3)))
   ENCARG(cons_f(cons_f(a, z0), cons_f(cons_f(b, y0), y1))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(cons_f(b, y0), y1)))
   ENCARG(cons_f(cons_f(a, z0), cons_f(cons_f(cons_f(y0, y1), y2), y3))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(cons_f(cons_f(y0, y1), y2), y3)))
   ENCARG(cons_f(cons_f(a, z0), cons_f(cons_f(y0, y1), a))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(cons_f(y0, y1), a)))
   ENCARG(cons_f(cons_f(a, z0), cons_f(cons_f(y0, y1), b))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(cons_f(y0, y1), b)))
   ENCARG(cons_f(cons_f(a, z0), cons_f(cons_f(y0, y1), c))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(cons_f(y0, y1), c)))
   ENCARG(cons_f(cons_f(a, z0), cons_f(cons_f(a, y0), y1))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(cons_f(a, y0), y1)))
   ENCARG(cons_f(cons_f(a, z0), cons_f(c, a))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(c, a)))
   ENCARG(cons_f(cons_f(a, z0), cons_f(c, b))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(c, b)))
   ENCARG(cons_f(cons_f(a, z0), cons_f(c, c))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(c, c)))
   ENCARG(cons_f(cons_f(a, cons_f(c, y1)), z1)) -> c4(ENCARG(cons_f(a, cons_f(c, y1))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(y0, cons_f(c, y1)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(y0, cons_f(c, y1))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(cons_f(c, y0), y1))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(cons_f(c, y0), y1)))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, y0)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, y0))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, y0)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, y0))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(c, y0)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(c, y0))))
   ENCARG(cons_f(cons_f(a, cons_f(y0, cons_f(y1, a))), z1)) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(y1, a)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(y0, cons_f(y1, a))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(y0, cons_f(y1, a)))))
   ENCARG(cons_f(cons_f(a, cons_f(y0, cons_f(y1, b))), z1)) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(y1, b)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(y0, cons_f(y1, b))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(y0, cons_f(y1, b)))))
   ENCARG(cons_f(cons_f(a, cons_f(y0, cons_f(y1, c))), z1)) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(y1, c)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(y0, cons_f(y1, c))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(y0, cons_f(y1, c)))))
   ENCARG(cons_f(cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))
   ENCARG(cons_f(cons_f(a, cons_f(y0, cons_f(a, y1))), z1)) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(a, y1)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(y0, cons_f(a, y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(y0, cons_f(a, y1)))))
   ENCARG(cons_f(cons_f(a, cons_f(y0, cons_f(b, y1))), z1)) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(b, y1)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(y0, cons_f(b, y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(y0, cons_f(b, y1)))))
   ENCARG(cons_f(cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))), z1)) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))
   ENCARG(cons_f(cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))), z1)) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(y0, y1))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, y1)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(y0, y1)))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(y0, y1))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, y1)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(y0, y1)))))
   ENCARG(cons_f(cons_f(a, cons_f(c, cons_f(y0, y1))), z1)) -> c4(ENCARG(cons_f(a, cons_f(c, cons_f(y0, y1)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(c, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(c, cons_f(y0, y1)))))
   ENCARG(cons_f(cons_f(a, cons_f(cons_f(y0, a), y1)), z1)) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, a), y1))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(cons_f(y0, a), y1)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(cons_f(y0, a), y1))))
   ENCARG(cons_f(cons_f(a, cons_f(cons_f(y0, b), y1)), z1)) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, b), y1))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(cons_f(y0, b), y1)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(cons_f(y0, b), y1))))
   ENCARG(cons_f(cons_f(a, cons_f(cons_f(y0, c), y1)), z1)) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, c), y1))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(cons_f(y0, c), y1)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(cons_f(y0, c), y1))))
   ENCARG(cons_f(cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)), z1)) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))
   ENCARG(cons_f(cons_f(a, cons_f(cons_f(b, y0), y1)), z1)) -> c4(ENCARG(cons_f(a, cons_f(cons_f(b, y0), y1))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(cons_f(b, y0), y1)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(cons_f(b, y0), y1))))
   ENCARG(cons_f(cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)), z1)) -> c4(ENCARG(cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))
   ENCARG(cons_f(cons_f(a, cons_f(cons_f(y0, y1), a)), z1)) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, y1), a))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(cons_f(y0, y1), a)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(cons_f(y0, y1), a))))
   ENCARG(cons_f(cons_f(a, cons_f(cons_f(y0, y1), b)), z1)) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, y1), b))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(cons_f(y0, y1), b)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(cons_f(y0, y1), b))))
   ENCARG(cons_f(cons_f(a, cons_f(cons_f(y0, y1), c)), z1)) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, y1), c))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(cons_f(y0, y1), c)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(cons_f(y0, y1), c))))
   ENCARG(cons_f(cons_f(a, cons_f(cons_f(a, y0), y1)), z1)) -> c4(ENCARG(cons_f(a, cons_f(cons_f(a, y0), y1))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(cons_f(a, y0), y1)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(cons_f(a, y0), y1))))
   ENCARG(cons_f(cons_f(a, cons_f(c, a)), z1)) -> c4(ENCARG(cons_f(a, cons_f(c, a))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(c, a)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(c, a))))
   ENCARG(cons_f(cons_f(a, cons_f(c, b)), z1)) -> c4(ENCARG(cons_f(a, cons_f(c, b))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(c, b)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(c, b))))
   ENCARG(cons_f(cons_f(a, cons_f(c, c)), z1)) -> c4(ENCARG(cons_f(a, cons_f(c, c))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(c, c)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(c, c))))
   ENCARG(cons_f(cons_f(a, cons_f(y0, cons_f(c, y1))), z1)) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(c, y1)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(y0, cons_f(c, y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(y0, cons_f(c, y1)))))
   ENCARG(cons_f(cons_f(a, cons_f(cons_f(c, y0), y1)), z1)) -> c4(ENCARG(cons_f(a, cons_f(cons_f(c, y0), y1))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(cons_f(c, y0), y1)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(cons_f(c, y0), y1))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, y0)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, y0))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(c, y0)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(c, y0))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(y0, cons_f(y1, a))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(y0, cons_f(y1, a)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(y0, cons_f(y1, b))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(y0, cons_f(y1, b)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(y0, cons_f(y1, c))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(y0, cons_f(y1, c)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(y0, cons_f(a, y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(y0, cons_f(a, y1)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(y0, cons_f(b, y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(y0, cons_f(b, y1)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(y0, y1)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(y0, y1)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(c, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(c, cons_f(y0, y1)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(cons_f(y0, a), y1)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(cons_f(y0, a), y1))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(cons_f(y0, b), y1)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(cons_f(y0, b), y1))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(cons_f(y0, c), y1)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(cons_f(y0, c), y1))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(cons_f(b, y0), y1)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(cons_f(b, y0), y1))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(cons_f(y0, y1), a)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(cons_f(y0, y1), a))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(cons_f(y0, y1), b)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(cons_f(y0, y1), b))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(cons_f(y0, y1), c)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(cons_f(y0, y1), c))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(cons_f(a, y0), y1)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(cons_f(a, y0), y1))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(c, a)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(c, a))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(c, b)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(c, b))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(c, c)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(c, c))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(y0, cons_f(c, y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(y0, cons_f(c, y1)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(cons_f(c, y0), y1)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(cons_f(c, y0), y1))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, y0))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, y0)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, y0))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, y0)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(c, y0))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(c, y0)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(c, a))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(c, a)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(c, b))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(c, b)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(c, c))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(c, c)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1)))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(a, y0))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(a, y0)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(a, y0))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(a, y0)))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(b, y0))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, y0)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(b, y0))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(b, y0)))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(c, y0))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(c, y0)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(c, y0))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(c, y0)))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, a)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, a))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, a)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, a))))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, b)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, b))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, b)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, b))))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, c)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, c))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, c)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, c))))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(y0, cons_f(a, y1)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(a, y1))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(y0, cons_f(a, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(a, y1))))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(y0, cons_f(b, y1)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(b, y1))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(y0, cons_f(b, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(b, y1))))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(a, cons_f(y0, y1)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(y0, y1))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(a, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(y0, y1))))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(b, cons_f(y0, y1)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(y0, y1))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(b, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(y0, y1))))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(c, cons_f(y0, y1)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(c, cons_f(y0, y1))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(c, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(c, cons_f(y0, y1))))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(cons_f(y0, a), y1))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, a), y1)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(cons_f(y0, a), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, a), y1)))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(cons_f(y0, b), y1))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, b), y1)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(cons_f(y0, b), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, b), y1)))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(cons_f(y0, c), y1))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, c), y1)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(cons_f(y0, c), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, c), y1)))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(cons_f(b, y0), y1))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(b, y0), y1)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(cons_f(b, y0), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(b, y0), y1)))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), a))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), a)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), a))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), a)))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), b))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), b)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), b))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), b)))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), c))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), c)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), c))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), c)))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(cons_f(a, y0), y1))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(a, y0), y1)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(cons_f(a, y0), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(a, y0), y1)))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(c, a))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(c, a)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(c, a))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(c, a)))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(c, b))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(c, b)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(c, b))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(c, b)))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(c, c))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(c, c)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(c, c))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(c, c)))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(y0, cons_f(c, y1)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(c, y1))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(y0, cons_f(c, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(c, y1))))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(cons_f(c, y0), y1))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(c, y0), y1)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(cons_f(c, y0), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(c, y0), y1)))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(b, y0))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, y0)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(b, y0))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(b, y0)))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(c, y0))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(c, y0)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(c, y0))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(c, y0)))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, a)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, a))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, a)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, a))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, b)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, b))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, b)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, b))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, c)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, c))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, c)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, c))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3))))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(y0, cons_f(a, y1)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(a, y1))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(y0, cons_f(a, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(a, y1))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(y0, cons_f(b, y1)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(b, y1))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(y0, cons_f(b, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(b, y1))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, y1)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, y1))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, y1))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(b, cons_f(y0, y1)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(y0, y1))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(b, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(y0, y1))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(c, cons_f(y0, y1)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(c, cons_f(y0, y1))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(c, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(c, cons_f(y0, y1))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(cons_f(y0, a), y1))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, a), y1)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(cons_f(y0, a), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, a), y1)))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(cons_f(y0, b), y1))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, b), y1)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(cons_f(y0, b), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, b), y1)))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(cons_f(y0, c), y1))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, c), y1)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(cons_f(y0, c), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, c), y1)))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(cons_f(b, y0), y1))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(b, y0), y1)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(cons_f(b, y0), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(b, y0), y1)))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), a))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), a)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), a))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), a)))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), b))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), b)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), b))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), b)))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), c))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), c)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), c))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), c)))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(cons_f(a, y0), y1))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(a, y0), y1)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(cons_f(a, y0), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(a, y0), y1)))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(c, a))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(c, a)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(c, a))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(c, a)))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(c, b))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(c, b)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(c, b))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(c, b)))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(c, c))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(c, c)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(c, c))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(c, c)))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(y0, cons_f(c, y1)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(c, y1))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(y0, cons_f(c, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(c, y1))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(cons_f(c, y0), y1))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(c, y0), y1)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(cons_f(c, y0), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(c, y0), y1)))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(a, y0)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, y0))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(a, y0)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, y0))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(b, y0)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, y0))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(b, y0)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, y0))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(c, y0)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, y0))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(c, y0)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, y0))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a))))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a)))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a)))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b))))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b)))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b)))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c))))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c)))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c)))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1))))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1)))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1)))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1))))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1)))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1)))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1))))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1)))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1)))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1))))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1)))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1)))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1))))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1)))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1)))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(c, a)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, a))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(c, a)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, a))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(c, b)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, b))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(c, b)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, b))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(c, c)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, c))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(c, c)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, c))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1))))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1)))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1)))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(b, y0))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(b, y0)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(c, y0))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(c, y0)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(y0, cons_f(y1, a)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(y1, a))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(y0, cons_f(y1, b)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(y1, b))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(y0, cons_f(y1, c)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(y1, c))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(y0, cons_f(a, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(a, y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(y0, cons_f(b, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(b, y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(b, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(b, cons_f(y0, y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(c, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(c, cons_f(y0, y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(cons_f(y0, a), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, a), y1)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(cons_f(y0, b), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, b), y1)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(cons_f(y0, c), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, c), y1)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(cons_f(b, y0), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(b, y0), y1)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(cons_f(y0, y1), a))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, y1), a)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(cons_f(y0, y1), b))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, y1), b)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(cons_f(y0, y1), c))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, y1), c)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(cons_f(a, y0), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(a, y0), y1)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(c, a))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(c, a)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(c, b))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(c, b)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(c, c))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(c, c)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(y0, cons_f(c, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(c, y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(cons_f(c, y0), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(c, y0), y1)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(a, y0)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(a, y0))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(b, y0)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(b, y0))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(c, y0)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(c, y0))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(c, a)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(c, a))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(c, b)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(c, b))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(c, c)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(c, c))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(a, y0)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(a, y0))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(b, y0)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(b, y0))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(c, y0)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(c, y0))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, a))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, a)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, b))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, b)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, c))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, c)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(a, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(a, y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(b, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(b, y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(a, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(a, cons_f(y0, y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(b, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(b, cons_f(y0, y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(c, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(c, cons_f(y0, y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, a), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, a), y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, b), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, b), y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, c), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, c), y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(b, y0), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(b, y0), y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), a)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), a))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), b)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), b))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), c)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), c))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(a, y0), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(a, y0), y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(c, a)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(c, a))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(c, b)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(c, b))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(c, c)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(c, c))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(c, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(c, y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(c, y0), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(c, y0), y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(b, y0)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(b, y0))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(c, y0)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(c, y0))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, a))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, a)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, b))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, b)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, c))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, c)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(a, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(a, y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(b, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(b, y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(b, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(b, cons_f(y0, y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(c, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(c, cons_f(y0, y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, a), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, a), y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, b), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, b), y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, c), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, c), y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(b, y0), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(b, y0), y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), a)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), a))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), b)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), b))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), c)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), c))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(a, y0), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(a, y0), y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(c, a)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(c, a))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(c, b)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(c, b))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(c, c)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(c, c))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(c, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(c, y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(c, y0), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(c, y0), y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(a, y0))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(a, y0)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(b, y0))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(b, y0)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, y0))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, y0)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a)))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a))))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b)))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b))))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c)))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c))))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1)))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1))))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1)))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1))))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1)))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1))))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1)))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1))))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1)))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1))))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, a))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, a)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, b))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, b)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, c))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, c)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1)))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1))))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1)))))))

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(116)
Obligation:
Complexity Dependency Tuples Problem

Rules:
   encArg(a) -> a
   encArg(b) -> b
   encArg(c) -> c
   encArg(cons_f(z0, z1)) -> f(encArg(z0), encArg(z1))
   f(f(f(a, z0), z1), z2) -> f(f(z0, z2), f(z1, z2))
   f(f(b, z0), z1) -> z0
   f(c, z0) -> z0
Tuples:
   F(f(f(a, z0), z1), z2) -> c9(F(f(z0, z2), f(z1, z2)), F(z0, z2), F(z1, z2))
   F(f(b, z0), z1) -> c10
   F(c, z0) -> c11
   ENCARG(cons_f(c, x1)) -> c4(F(c, encArg(x1)), ENCARG(x1))
   ENCODE_F(c, x1) -> c1(F(c, encArg(x1)))
   ENCARG(cons_f(x0, cons_f(x1, a))) -> c4(F(encArg(x0), f(encArg(x1), a)), ENCARG(x0), ENCARG(cons_f(x1, a)))
   ENCARG(cons_f(x0, cons_f(x1, b))) -> c4(F(encArg(x0), f(encArg(x1), b)), ENCARG(x0), ENCARG(cons_f(x1, b)))
   ENCARG(cons_f(x0, cons_f(x1, c))) -> c4(F(encArg(x0), f(encArg(x1), c)), ENCARG(x0), ENCARG(cons_f(x1, c)))
   ENCARG(cons_f(x0, cons_f(x1, cons_f(z0, z1)))) -> c4(F(encArg(x0), f(encArg(x1), f(encArg(z0), encArg(z1)))), ENCARG(x0), ENCARG(cons_f(x1, cons_f(z0, z1))))
   ENCARG(cons_f(x0, cons_f(a, x2))) -> c4(F(encArg(x0), f(a, encArg(x2))), ENCARG(x0), ENCARG(cons_f(a, x2)))
   ENCARG(cons_f(x0, cons_f(b, x2))) -> c4(F(encArg(x0), f(b, encArg(x2))), ENCARG(x0), ENCARG(cons_f(b, x2)))
   ENCARG(cons_f(x0, cons_f(cons_f(z0, z1), x2))) -> c4(F(encArg(x0), f(f(encArg(z0), encArg(z1)), encArg(x2))), ENCARG(x0), ENCARG(cons_f(cons_f(z0, z1), x2)))
   ENCARG(cons_f(cons_f(z0, z1), cons_f(x1, x2))) -> c4(F(f(encArg(z0), encArg(z1)), f(encArg(x1), encArg(x2))), ENCARG(cons_f(z0, z1)), ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(c, cons_f(x1, x2))) -> c4(F(c, f(encArg(x1), encArg(x2))), ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(cons_f(x0, a), x2)) -> c4(F(f(encArg(x0), a), encArg(x2)), ENCARG(cons_f(x0, a)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, b), x2)) -> c4(F(f(encArg(x0), b), encArg(x2)), ENCARG(cons_f(x0, b)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, c), x2)) -> c4(F(f(encArg(x0), c), encArg(x2)), ENCARG(cons_f(x0, c)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, cons_f(z0, z1)), x2)) -> c4(F(f(encArg(x0), f(encArg(z0), encArg(z1))), encArg(x2)), ENCARG(cons_f(x0, cons_f(z0, z1))), ENCARG(x2))
   ENCARG(cons_f(cons_f(b, x1), x2)) -> c4(F(f(b, encArg(x1)), encArg(x2)), ENCARG(cons_f(b, x1)), ENCARG(x2))
   ENCARG(cons_f(cons_f(cons_f(z0, z1), x1), x2)) -> c4(F(f(f(encArg(z0), encArg(z1)), encArg(x1)), encArg(x2)), ENCARG(cons_f(cons_f(z0, z1), x1)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, x1), a)) -> c4(F(f(encArg(x0), encArg(x1)), a), ENCARG(cons_f(x0, x1)))
   ENCARG(cons_f(cons_f(x0, x1), b)) -> c4(F(f(encArg(x0), encArg(x1)), b), ENCARG(cons_f(x0, x1)))
   ENCARG(cons_f(cons_f(x0, x1), c)) -> c4(F(f(encArg(x0), encArg(x1)), c), ENCARG(cons_f(x0, x1)))
   ENCARG(cons_f(c, a)) -> c4(F(c, a))
   ENCARG(cons_f(c, b)) -> c4(F(c, b))
   ENCARG(cons_f(c, c)) -> c4(F(c, c))
   ENCODE_F(cons_f(z0, z1), a) -> c1(F(f(encArg(z0), encArg(z1)), a))
   ENCODE_F(cons_f(z0, z1), b) -> c1(F(f(encArg(z0), encArg(z1)), b))
   ENCODE_F(cons_f(z0, z1), c) -> c1(F(f(encArg(z0), encArg(z1)), c))
   ENCODE_F(x0, cons_f(x1, a)) -> c1(F(encArg(x0), f(encArg(x1), a)))
   ENCODE_F(x0, cons_f(x1, b)) -> c1(F(encArg(x0), f(encArg(x1), b)))
   ENCODE_F(x0, cons_f(x1, c)) -> c1(F(encArg(x0), f(encArg(x1), c)))
   ENCODE_F(x0, cons_f(x1, cons_f(z0, z1))) -> c1(F(encArg(x0), f(encArg(x1), f(encArg(z0), encArg(z1)))))
   ENCODE_F(x0, cons_f(a, x2)) -> c1(F(encArg(x0), f(a, encArg(x2))))
   ENCODE_F(x0, cons_f(b, x2)) -> c1(F(encArg(x0), f(b, encArg(x2))))
   ENCODE_F(x0, cons_f(cons_f(z0, z1), x2)) -> c1(F(encArg(x0), f(f(encArg(z0), encArg(z1)), encArg(x2))))
   ENCODE_F(c, cons_f(x1, x2)) -> c1(F(c, f(encArg(x1), encArg(x2))))
   ENCODE_F(cons_f(z0, z1), cons_f(x1, x2)) -> c1(F(f(encArg(z0), encArg(z1)), f(encArg(x1), encArg(x2))))
   ENCODE_F(cons_f(x0, a), x2) -> c1(F(f(encArg(x0), a), encArg(x2)))
   ENCODE_F(cons_f(x0, b), x2) -> c1(F(f(encArg(x0), b), encArg(x2)))
   ENCODE_F(cons_f(x0, c), x2) -> c1(F(f(encArg(x0), c), encArg(x2)))
   ENCODE_F(cons_f(x0, cons_f(z0, z1)), x2) -> c1(F(f(encArg(x0), f(encArg(z0), encArg(z1))), encArg(x2)))
   ENCODE_F(cons_f(b, x1), x2) -> c1(F(f(b, encArg(x1)), encArg(x2)))
   ENCODE_F(cons_f(cons_f(z0, z1), x1), x2) -> c1(F(f(f(encArg(z0), encArg(z1)), encArg(x1)), encArg(x2)))
   ENCARG(cons_f(z0, cons_f(c, z1))) -> c4(F(encArg(z0), encArg(z1)), ENCARG(z0), ENCARG(cons_f(c, z1)))
   ENCARG(cons_f(cons_f(c, z0), z1)) -> c4(F(encArg(z0), encArg(z1)), ENCARG(cons_f(c, z0)), ENCARG(z1))
   ENCODE_F(z0, cons_f(c, z1)) -> c1(F(encArg(z0), encArg(z1)))
   ENCODE_F(cons_f(c, z0), z1) -> c1(F(encArg(z0), encArg(z1)))
   ENCARG(cons_f(a, cons_f(a, y0))) -> c4(ENCARG(cons_f(a, y0)))
   ENCARG(cons_f(a, cons_f(b, y0))) -> c4(ENCARG(cons_f(b, y0)))
   ENCARG(cons_f(a, cons_f(c, y0))) -> c4(ENCARG(cons_f(c, y0)))
   ENCARG(cons_f(a, cons_f(y0, cons_f(y1, a)))) -> c4(ENCARG(cons_f(y0, cons_f(y1, a))))
   ENCARG(cons_f(a, cons_f(y0, cons_f(y1, b)))) -> c4(ENCARG(cons_f(y0, cons_f(y1, b))))
   ENCARG(cons_f(a, cons_f(y0, cons_f(y1, c)))) -> c4(ENCARG(cons_f(y0, cons_f(y1, c))))
   ENCARG(cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))) -> c4(ENCARG(cons_f(y0, cons_f(y1, cons_f(y2, y3)))))
   ENCARG(cons_f(a, cons_f(y0, cons_f(a, y1)))) -> c4(ENCARG(cons_f(y0, cons_f(a, y1))))
   ENCARG(cons_f(a, cons_f(y0, cons_f(b, y1)))) -> c4(ENCARG(cons_f(y0, cons_f(b, y1))))
   ENCARG(cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))) -> c4(ENCARG(cons_f(y0, cons_f(cons_f(y1, y2), y3))))
   ENCARG(cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))) -> c4(ENCARG(cons_f(cons_f(y0, y1), cons_f(y2, y3))))
   ENCARG(cons_f(a, cons_f(a, cons_f(y0, y1)))) -> c4(ENCARG(cons_f(a, cons_f(y0, y1))))
   ENCARG(cons_f(a, cons_f(b, cons_f(y0, y1)))) -> c4(ENCARG(cons_f(b, cons_f(y0, y1))))
   ENCARG(cons_f(a, cons_f(c, cons_f(y0, y1)))) -> c4(ENCARG(cons_f(c, cons_f(y0, y1))))
   ENCARG(cons_f(a, cons_f(cons_f(y0, a), y1))) -> c4(ENCARG(cons_f(cons_f(y0, a), y1)))
   ENCARG(cons_f(a, cons_f(cons_f(y0, b), y1))) -> c4(ENCARG(cons_f(cons_f(y0, b), y1)))
   ENCARG(cons_f(a, cons_f(cons_f(y0, c), y1))) -> c4(ENCARG(cons_f(cons_f(y0, c), y1)))
   ENCARG(cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))) -> c4(ENCARG(cons_f(cons_f(y0, cons_f(y1, y2)), y3)))
   ENCARG(cons_f(a, cons_f(cons_f(b, y0), y1))) -> c4(ENCARG(cons_f(cons_f(b, y0), y1)))
   ENCARG(cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))) -> c4(ENCARG(cons_f(cons_f(cons_f(y0, y1), y2), y3)))
   ENCARG(cons_f(a, cons_f(cons_f(y0, y1), a))) -> c4(ENCARG(cons_f(cons_f(y0, y1), a)))
   ENCARG(cons_f(a, cons_f(cons_f(y0, y1), b))) -> c4(ENCARG(cons_f(cons_f(y0, y1), b)))
   ENCARG(cons_f(a, cons_f(cons_f(y0, y1), c))) -> c4(ENCARG(cons_f(cons_f(y0, y1), c)))
   ENCARG(cons_f(a, cons_f(cons_f(a, y0), y1))) -> c4(ENCARG(cons_f(cons_f(a, y0), y1)))
   ENCARG(cons_f(a, cons_f(c, a))) -> c4(ENCARG(cons_f(c, a)))
   ENCARG(cons_f(a, cons_f(c, b))) -> c4(ENCARG(cons_f(c, b)))
   ENCARG(cons_f(a, cons_f(c, c))) -> c4(ENCARG(cons_f(c, c)))
   ENCARG(cons_f(a, cons_f(y0, cons_f(c, y1)))) -> c4(ENCARG(cons_f(y0, cons_f(c, y1))))
   ENCARG(cons_f(a, cons_f(cons_f(c, y0), y1))) -> c4(ENCARG(cons_f(cons_f(c, y0), y1)))
   ENCARG(cons_f(b, cons_f(b, y0))) -> c4(ENCARG(cons_f(b, y0)))
   ENCARG(cons_f(b, cons_f(c, y0))) -> c4(ENCARG(cons_f(c, y0)))
   ENCARG(cons_f(b, cons_f(y0, cons_f(y1, a)))) -> c4(ENCARG(cons_f(y0, cons_f(y1, a))))
   ENCARG(cons_f(b, cons_f(y0, cons_f(y1, b)))) -> c4(ENCARG(cons_f(y0, cons_f(y1, b))))
   ENCARG(cons_f(b, cons_f(y0, cons_f(y1, c)))) -> c4(ENCARG(cons_f(y0, cons_f(y1, c))))
   ENCARG(cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3))))) -> c4(ENCARG(cons_f(y0, cons_f(y1, cons_f(y2, y3)))))
   ENCARG(cons_f(b, cons_f(y0, cons_f(a, y1)))) -> c4(ENCARG(cons_f(y0, cons_f(a, y1))))
   ENCARG(cons_f(b, cons_f(y0, cons_f(b, y1)))) -> c4(ENCARG(cons_f(y0, cons_f(b, y1))))
   ENCARG(cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3)))) -> c4(ENCARG(cons_f(y0, cons_f(cons_f(y1, y2), y3))))
   ENCARG(cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3)))) -> c4(ENCARG(cons_f(cons_f(y0, y1), cons_f(y2, y3))))
   ENCARG(cons_f(b, cons_f(a, cons_f(y0, y1)))) -> c4(ENCARG(cons_f(a, cons_f(y0, y1))))
   ENCARG(cons_f(b, cons_f(b, cons_f(y0, y1)))) -> c4(ENCARG(cons_f(b, cons_f(y0, y1))))
   ENCARG(cons_f(b, cons_f(c, cons_f(y0, y1)))) -> c4(ENCARG(cons_f(c, cons_f(y0, y1))))
   ENCARG(cons_f(b, cons_f(cons_f(y0, a), y1))) -> c4(ENCARG(cons_f(cons_f(y0, a), y1)))
   ENCARG(cons_f(b, cons_f(cons_f(y0, b), y1))) -> c4(ENCARG(cons_f(cons_f(y0, b), y1)))
   ENCARG(cons_f(b, cons_f(cons_f(y0, c), y1))) -> c4(ENCARG(cons_f(cons_f(y0, c), y1)))
   ENCARG(cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3))) -> c4(ENCARG(cons_f(cons_f(y0, cons_f(y1, y2)), y3)))
   ENCARG(cons_f(b, cons_f(cons_f(b, y0), y1))) -> c4(ENCARG(cons_f(cons_f(b, y0), y1)))
   ENCARG(cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3))) -> c4(ENCARG(cons_f(cons_f(cons_f(y0, y1), y2), y3)))
   ENCARG(cons_f(b, cons_f(cons_f(y0, y1), a))) -> c4(ENCARG(cons_f(cons_f(y0, y1), a)))
   ENCARG(cons_f(b, cons_f(cons_f(y0, y1), b))) -> c4(ENCARG(cons_f(cons_f(y0, y1), b)))
   ENCARG(cons_f(b, cons_f(cons_f(y0, y1), c))) -> c4(ENCARG(cons_f(cons_f(y0, y1), c)))
   ENCARG(cons_f(b, cons_f(cons_f(a, y0), y1))) -> c4(ENCARG(cons_f(cons_f(a, y0), y1)))
   ENCARG(cons_f(b, cons_f(c, a))) -> c4(ENCARG(cons_f(c, a)))
   ENCARG(cons_f(b, cons_f(c, b))) -> c4(ENCARG(cons_f(c, b)))
   ENCARG(cons_f(b, cons_f(c, c))) -> c4(ENCARG(cons_f(c, c)))
   ENCARG(cons_f(b, cons_f(y0, cons_f(c, y1)))) -> c4(ENCARG(cons_f(y0, cons_f(c, y1))))
   ENCARG(cons_f(b, cons_f(cons_f(c, y0), y1))) -> c4(ENCARG(cons_f(cons_f(c, y0), y1)))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, y0)))) -> c4(ENCARG(cons_f(a, cons_f(a, y0))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, y0)))) -> c4(ENCARG(cons_f(a, cons_f(b, y0))))
   ENCARG(cons_f(b, cons_f(a, cons_f(c, y0)))) -> c4(ENCARG(cons_f(a, cons_f(c, y0))))
   ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(y1, a)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(y1, b)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(y1, c)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(a, y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(b, y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(a, cons_f(c, cons_f(y0, y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, a), y1))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, b), y1))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, c), y1))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(b, y0), y1))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, y1), a))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, y1), b))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, y1), c))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(a, y0), y1))))
   ENCARG(cons_f(b, cons_f(a, cons_f(c, a)))) -> c4(ENCARG(cons_f(a, cons_f(c, a))))
   ENCARG(cons_f(b, cons_f(a, cons_f(c, b)))) -> c4(ENCARG(cons_f(a, cons_f(c, b))))
   ENCARG(cons_f(b, cons_f(a, cons_f(c, c)))) -> c4(ENCARG(cons_f(a, cons_f(c, c))))
   ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(c, y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(c, y0), y1))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, y0)))) -> c4(ENCARG(cons_f(a, cons_f(a, y0))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, y0)))) -> c4(ENCARG(cons_f(a, cons_f(b, y0))))
   ENCARG(cons_f(a, cons_f(a, cons_f(c, y0)))) -> c4(ENCARG(cons_f(a, cons_f(c, y0))))
   ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, a))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(y1, a)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, b))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(y1, b)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, c))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(y1, c)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(a, y1))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(a, y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(b, y1))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(b, y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(c, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(a, cons_f(c, cons_f(y0, y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, a), y1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, a), y1))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, b), y1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, b), y1))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, c), y1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, c), y1))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(b, y0), y1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(b, y0), y1))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), a)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, y1), a))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), b)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, y1), b))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), c)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, y1), c))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(a, y0), y1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(a, y0), y1))))
   ENCARG(cons_f(a, cons_f(a, cons_f(c, a)))) -> c4(ENCARG(cons_f(a, cons_f(c, a))))
   ENCARG(cons_f(a, cons_f(a, cons_f(c, b)))) -> c4(ENCARG(cons_f(a, cons_f(c, b))))
   ENCARG(cons_f(a, cons_f(a, cons_f(c, c)))) -> c4(ENCARG(cons_f(a, cons_f(c, c))))
   ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(c, y1))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(c, y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(c, y0), y1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(c, y0), y1))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, y0)))) -> c4(ENCARG(cons_f(b, cons_f(b, y0))))
   ENCARG(cons_f(a, cons_f(b, cons_f(c, y0)))) -> c4(ENCARG(cons_f(b, cons_f(c, y0))))
   ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, a))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(y1, a)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, b))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(y1, b)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, c))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(y1, c)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(a, y1))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(a, y1)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(b, y1))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(b, y1)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3))))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, y1)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(y0, y1)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(c, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(b, cons_f(c, cons_f(y0, y1)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, a), y1)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, a), y1))))
   ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, b), y1)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, b), y1))))
   ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, c), y1)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, c), y1))))
   ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))
   ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(b, y0), y1)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(b, y0), y1))))
   ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3))))
   ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), a)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, y1), a))))
   ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), b)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, y1), b))))
   ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), c)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, y1), c))))
   ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(a, y0), y1)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(a, y0), y1))))
   ENCARG(cons_f(a, cons_f(b, cons_f(c, a)))) -> c4(ENCARG(cons_f(b, cons_f(c, a))))
   ENCARG(cons_f(a, cons_f(b, cons_f(c, b)))) -> c4(ENCARG(cons_f(b, cons_f(c, b))))
   ENCARG(cons_f(a, cons_f(b, cons_f(c, c)))) -> c4(ENCARG(cons_f(b, cons_f(c, c))))
   ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(c, y1))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(c, y1)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(c, y0), y1)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(c, y0), y1))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, y0))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, y0)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, y0))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, y0)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, y0))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(c, y0)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, a))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(c, a)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, b))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(c, b)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, c))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(c, c)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(b, y0)))) -> c4(ENCARG(cons_f(b, cons_f(b, y0))))
   ENCARG(cons_f(b, cons_f(b, cons_f(c, y0)))) -> c4(ENCARG(cons_f(b, cons_f(c, y0))))
   ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(y1, a))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(y1, a)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(y1, b))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(y1, b)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(y1, c))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(y1, c)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))
   ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(a, y1))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(a, y1)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(b, y1))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(b, y1)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3))))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, y1)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(b, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(y0, y1)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(c, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(b, cons_f(c, cons_f(y0, y1)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, a), y1)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, a), y1))))
   ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, b), y1)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, b), y1))))
   ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, c), y1)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, c), y1))))
   ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))
   ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(b, y0), y1)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(b, y0), y1))))
   ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3))))
   ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, y1), a)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, y1), a))))
   ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, y1), b)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, y1), b))))
   ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, y1), c)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, y1), c))))
   ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(a, y0), y1)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(a, y0), y1))))
   ENCARG(cons_f(b, cons_f(b, cons_f(c, a)))) -> c4(ENCARG(cons_f(b, cons_f(c, a))))
   ENCARG(cons_f(b, cons_f(b, cons_f(c, b)))) -> c4(ENCARG(cons_f(b, cons_f(c, b))))
   ENCARG(cons_f(b, cons_f(b, cons_f(c, c)))) -> c4(ENCARG(cons_f(b, cons_f(c, c))))
   ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(c, y1))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(c, y1)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(c, y0), y1)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(c, y0), y1))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(a, y0))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, y0)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(b, y0))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, y0)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(c, y0))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(c, y0)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a))))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b))))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c))))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1))))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1))))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1))))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1))))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1))))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(c, a))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(c, a)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(c, b))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(c, b)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(c, c))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(c, c)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1))))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(a, y0))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(a, y0)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(b, y0))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, y0)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(c, y0))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(c, y0)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, a)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, a))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, b)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, b))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, c)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, c))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(a, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(a, y1))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(b, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(b, y1))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(a, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(y0, y1))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(b, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(y0, y1))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(c, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(c, cons_f(y0, y1))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, a), y1))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, a), y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, b), y1))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, b), y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, c), y1))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, c), y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(b, y0), y1))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(b, y0), y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), a))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), a)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), b))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), b)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), c))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), c)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(a, y0), y1))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(a, y0), y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(c, a))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(c, a)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(c, b))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(c, b)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(c, c))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(c, c)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(c, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(c, y1))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(c, y0), y1))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(c, y0), y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(b, y0))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, y0)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(c, y0))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(c, y0)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, a)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, a))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, b)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, b))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, c)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, c))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(a, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(a, y1))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(b, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(b, y1))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, y1))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(b, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(y0, y1))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(c, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(c, cons_f(y0, y1))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, a), y1))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, a), y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, b), y1))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, b), y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, c), y1))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, c), y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(b, y0), y1))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(b, y0), y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), a))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), a)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), b))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), b)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), c))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), c)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(a, y0), y1))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(a, y0), y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(c, a))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(c, a)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(c, b))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(c, b)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(c, c))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(c, c)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(c, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(c, y1))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(c, y0), y1))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(c, y0), y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(a, y0)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, y0))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(b, y0)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, y0))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, y0)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, y0))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a)))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b)))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c)))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1)))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1)))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1)))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1)))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1)))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, a)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, a))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, b)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, b))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, c)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, c))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1)))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(c, y0))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(c, y0)))
   ENCARG(cons_f(cons_f(a, cons_f(y1, a)), z1)) -> c4(ENCARG(cons_f(a, cons_f(y1, a))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(y0, cons_f(y1, a)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(y0, cons_f(y1, a))))
   ENCARG(cons_f(cons_f(a, cons_f(y1, b)), z1)) -> c4(ENCARG(cons_f(a, cons_f(y1, b))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(y0, cons_f(y1, b)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(y0, cons_f(y1, b))))
   ENCARG(cons_f(cons_f(a, cons_f(y1, c)), z1)) -> c4(ENCARG(cons_f(a, cons_f(y1, c))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(y0, cons_f(y1, c)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(y0, cons_f(y1, c))))
   ENCARG(cons_f(cons_f(a, cons_f(y1, cons_f(y2, y3))), z1)) -> c4(ENCARG(cons_f(a, cons_f(y1, cons_f(y2, y3)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(y0, cons_f(y1, cons_f(y2, y3))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(y0, cons_f(y1, cons_f(y2, y3)))))
   ENCARG(cons_f(cons_f(a, cons_f(a, y1)), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, y1))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(y0, cons_f(a, y1)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(y0, cons_f(a, y1))))
   ENCARG(cons_f(cons_f(a, cons_f(b, y1)), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, y1))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(y0, cons_f(b, y1)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(y0, cons_f(b, y1))))
   ENCARG(cons_f(cons_f(a, cons_f(cons_f(y1, y2), y3)), z1)) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y1, y2), y3))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(y0, cons_f(cons_f(y1, y2), y3)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(y0, cons_f(cons_f(y1, y2), y3))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(cons_f(y0, y1), cons_f(y2, y3)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(cons_f(y0, y1), cons_f(y2, y3))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(c, cons_f(y0, y1)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(c, cons_f(y0, y1))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(cons_f(y0, a), y1))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(cons_f(y0, a), y1)))
   ENCARG(cons_f(cons_f(a, z0), cons_f(cons_f(y0, b), y1))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(cons_f(y0, b), y1)))
   ENCARG(cons_f(cons_f(a, z0), cons_f(cons_f(y0, c), y1))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(cons_f(y0, c), y1)))
   ENCARG(cons_f(cons_f(a, z0), cons_f(cons_f(y0, cons_f(y1, y2)), y3))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(cons_f(y0, cons_f(y1, y2)), y3)))
   ENCARG(cons_f(cons_f(a, z0), cons_f(cons_f(b, y0), y1))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(cons_f(b, y0), y1)))
   ENCARG(cons_f(cons_f(a, z0), cons_f(cons_f(cons_f(y0, y1), y2), y3))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(cons_f(cons_f(y0, y1), y2), y3)))
   ENCARG(cons_f(cons_f(a, z0), cons_f(cons_f(y0, y1), a))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(cons_f(y0, y1), a)))
   ENCARG(cons_f(cons_f(a, z0), cons_f(cons_f(y0, y1), b))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(cons_f(y0, y1), b)))
   ENCARG(cons_f(cons_f(a, z0), cons_f(cons_f(y0, y1), c))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(cons_f(y0, y1), c)))
   ENCARG(cons_f(cons_f(a, z0), cons_f(cons_f(a, y0), y1))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(cons_f(a, y0), y1)))
   ENCARG(cons_f(cons_f(a, z0), cons_f(c, a))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(c, a)))
   ENCARG(cons_f(cons_f(a, z0), cons_f(c, b))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(c, b)))
   ENCARG(cons_f(cons_f(a, z0), cons_f(c, c))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(c, c)))
   ENCARG(cons_f(cons_f(a, cons_f(c, y1)), z1)) -> c4(ENCARG(cons_f(a, cons_f(c, y1))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(y0, cons_f(c, y1)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(y0, cons_f(c, y1))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(cons_f(c, y0), y1))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(cons_f(c, y0), y1)))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, y0)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, y0))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, y0)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, y0))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(c, y0)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(c, y0))))
   ENCARG(cons_f(cons_f(a, cons_f(y0, cons_f(y1, a))), z1)) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(y1, a)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(y0, cons_f(y1, a))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(y0, cons_f(y1, a)))))
   ENCARG(cons_f(cons_f(a, cons_f(y0, cons_f(y1, b))), z1)) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(y1, b)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(y0, cons_f(y1, b))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(y0, cons_f(y1, b)))))
   ENCARG(cons_f(cons_f(a, cons_f(y0, cons_f(y1, c))), z1)) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(y1, c)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(y0, cons_f(y1, c))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(y0, cons_f(y1, c)))))
   ENCARG(cons_f(cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))
   ENCARG(cons_f(cons_f(a, cons_f(y0, cons_f(a, y1))), z1)) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(a, y1)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(y0, cons_f(a, y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(y0, cons_f(a, y1)))))
   ENCARG(cons_f(cons_f(a, cons_f(y0, cons_f(b, y1))), z1)) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(b, y1)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(y0, cons_f(b, y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(y0, cons_f(b, y1)))))
   ENCARG(cons_f(cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))), z1)) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))
   ENCARG(cons_f(cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))), z1)) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(y0, y1))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, y1)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(y0, y1)))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(y0, y1))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, y1)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(y0, y1)))))
   ENCARG(cons_f(cons_f(a, cons_f(c, cons_f(y0, y1))), z1)) -> c4(ENCARG(cons_f(a, cons_f(c, cons_f(y0, y1)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(c, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(c, cons_f(y0, y1)))))
   ENCARG(cons_f(cons_f(a, cons_f(cons_f(y0, a), y1)), z1)) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, a), y1))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(cons_f(y0, a), y1)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(cons_f(y0, a), y1))))
   ENCARG(cons_f(cons_f(a, cons_f(cons_f(y0, b), y1)), z1)) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, b), y1))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(cons_f(y0, b), y1)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(cons_f(y0, b), y1))))
   ENCARG(cons_f(cons_f(a, cons_f(cons_f(y0, c), y1)), z1)) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, c), y1))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(cons_f(y0, c), y1)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(cons_f(y0, c), y1))))
   ENCARG(cons_f(cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)), z1)) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))
   ENCARG(cons_f(cons_f(a, cons_f(cons_f(b, y0), y1)), z1)) -> c4(ENCARG(cons_f(a, cons_f(cons_f(b, y0), y1))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(cons_f(b, y0), y1)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(cons_f(b, y0), y1))))
   ENCARG(cons_f(cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)), z1)) -> c4(ENCARG(cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))
   ENCARG(cons_f(cons_f(a, cons_f(cons_f(y0, y1), a)), z1)) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, y1), a))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(cons_f(y0, y1), a)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(cons_f(y0, y1), a))))
   ENCARG(cons_f(cons_f(a, cons_f(cons_f(y0, y1), b)), z1)) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, y1), b))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(cons_f(y0, y1), b)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(cons_f(y0, y1), b))))
   ENCARG(cons_f(cons_f(a, cons_f(cons_f(y0, y1), c)), z1)) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, y1), c))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(cons_f(y0, y1), c)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(cons_f(y0, y1), c))))
   ENCARG(cons_f(cons_f(a, cons_f(cons_f(a, y0), y1)), z1)) -> c4(ENCARG(cons_f(a, cons_f(cons_f(a, y0), y1))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(cons_f(a, y0), y1)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(cons_f(a, y0), y1))))
   ENCARG(cons_f(cons_f(a, cons_f(c, a)), z1)) -> c4(ENCARG(cons_f(a, cons_f(c, a))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(c, a)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(c, a))))
   ENCARG(cons_f(cons_f(a, cons_f(c, b)), z1)) -> c4(ENCARG(cons_f(a, cons_f(c, b))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(c, b)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(c, b))))
   ENCARG(cons_f(cons_f(a, cons_f(c, c)), z1)) -> c4(ENCARG(cons_f(a, cons_f(c, c))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(c, c)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(c, c))))
   ENCARG(cons_f(cons_f(a, cons_f(y0, cons_f(c, y1))), z1)) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(c, y1)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(y0, cons_f(c, y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(y0, cons_f(c, y1)))))
   ENCARG(cons_f(cons_f(a, cons_f(cons_f(c, y0), y1)), z1)) -> c4(ENCARG(cons_f(a, cons_f(cons_f(c, y0), y1))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(cons_f(c, y0), y1)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(cons_f(c, y0), y1))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, y0)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, y0))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(c, y0)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(c, y0))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(y0, cons_f(y1, a))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(y0, cons_f(y1, a)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(y0, cons_f(y1, b))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(y0, cons_f(y1, b)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(y0, cons_f(y1, c))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(y0, cons_f(y1, c)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(y0, cons_f(a, y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(y0, cons_f(a, y1)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(y0, cons_f(b, y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(y0, cons_f(b, y1)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(y0, y1)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(y0, y1)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(c, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(c, cons_f(y0, y1)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(cons_f(y0, a), y1)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(cons_f(y0, a), y1))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(cons_f(y0, b), y1)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(cons_f(y0, b), y1))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(cons_f(y0, c), y1)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(cons_f(y0, c), y1))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(cons_f(b, y0), y1)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(cons_f(b, y0), y1))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(cons_f(y0, y1), a)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(cons_f(y0, y1), a))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(cons_f(y0, y1), b)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(cons_f(y0, y1), b))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(cons_f(y0, y1), c)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(cons_f(y0, y1), c))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(cons_f(a, y0), y1)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(cons_f(a, y0), y1))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(c, a)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(c, a))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(c, b)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(c, b))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(c, c)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(c, c))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(y0, cons_f(c, y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(y0, cons_f(c, y1)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(cons_f(c, y0), y1)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(cons_f(c, y0), y1))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, y0))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, y0)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, y0))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, y0)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(c, y0))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(c, y0)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(c, a))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(c, a)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(c, b))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(c, b)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(c, c))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(c, c)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1)))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(a, y0))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(a, y0)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(a, y0))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(a, y0)))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(b, y0))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, y0)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(b, y0))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(b, y0)))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(c, y0))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(c, y0)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(c, y0))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(c, y0)))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, a)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, a))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, a)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, a))))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, b)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, b))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, b)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, b))))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, c)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, c))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, c)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, c))))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(y0, cons_f(a, y1)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(a, y1))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(y0, cons_f(a, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(a, y1))))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(y0, cons_f(b, y1)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(b, y1))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(y0, cons_f(b, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(b, y1))))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(a, cons_f(y0, y1)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(y0, y1))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(a, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(y0, y1))))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(b, cons_f(y0, y1)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(y0, y1))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(b, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(y0, y1))))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(c, cons_f(y0, y1)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(c, cons_f(y0, y1))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(c, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(c, cons_f(y0, y1))))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(cons_f(y0, a), y1))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, a), y1)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(cons_f(y0, a), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, a), y1)))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(cons_f(y0, b), y1))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, b), y1)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(cons_f(y0, b), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, b), y1)))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(cons_f(y0, c), y1))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, c), y1)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(cons_f(y0, c), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, c), y1)))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(cons_f(b, y0), y1))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(b, y0), y1)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(cons_f(b, y0), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(b, y0), y1)))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), a))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), a)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), a))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), a)))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), b))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), b)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), b))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), b)))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), c))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), c)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), c))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), c)))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(cons_f(a, y0), y1))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(a, y0), y1)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(cons_f(a, y0), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(a, y0), y1)))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(c, a))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(c, a)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(c, a))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(c, a)))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(c, b))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(c, b)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(c, b))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(c, b)))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(c, c))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(c, c)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(c, c))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(c, c)))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(y0, cons_f(c, y1)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(c, y1))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(y0, cons_f(c, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(c, y1))))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(cons_f(c, y0), y1))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(c, y0), y1)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(cons_f(c, y0), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(c, y0), y1)))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(b, y0))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, y0)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(b, y0))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(b, y0)))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(c, y0))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(c, y0)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(c, y0))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(c, y0)))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, a)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, a))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, a)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, a))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, b)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, b))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, b)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, b))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, c)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, c))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, c)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, c))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3))))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(y0, cons_f(a, y1)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(a, y1))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(y0, cons_f(a, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(a, y1))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(y0, cons_f(b, y1)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(b, y1))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(y0, cons_f(b, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(b, y1))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, y1)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, y1))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, y1))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(b, cons_f(y0, y1)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(y0, y1))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(b, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(y0, y1))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(c, cons_f(y0, y1)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(c, cons_f(y0, y1))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(c, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(c, cons_f(y0, y1))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(cons_f(y0, a), y1))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, a), y1)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(cons_f(y0, a), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, a), y1)))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(cons_f(y0, b), y1))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, b), y1)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(cons_f(y0, b), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, b), y1)))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(cons_f(y0, c), y1))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, c), y1)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(cons_f(y0, c), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, c), y1)))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(cons_f(b, y0), y1))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(b, y0), y1)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(cons_f(b, y0), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(b, y0), y1)))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), a))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), a)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), a))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), a)))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), b))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), b)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), b))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), b)))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), c))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), c)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), c))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), c)))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(cons_f(a, y0), y1))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(a, y0), y1)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(cons_f(a, y0), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(a, y0), y1)))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(c, a))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(c, a)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(c, a))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(c, a)))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(c, b))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(c, b)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(c, b))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(c, b)))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(c, c))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(c, c)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(c, c))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(c, c)))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(y0, cons_f(c, y1)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(c, y1))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(y0, cons_f(c, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(c, y1))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(cons_f(c, y0), y1))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(c, y0), y1)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(cons_f(c, y0), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(c, y0), y1)))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(a, y0)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, y0))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(a, y0)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, y0))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(b, y0)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, y0))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(b, y0)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, y0))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(c, y0)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, y0))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(c, y0)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, y0))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a))))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a)))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a)))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b))))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b)))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b)))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c))))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c)))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c)))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1))))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1)))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1)))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1))))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1)))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1)))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1))))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1)))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1)))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1))))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1)))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1)))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1))))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1)))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1)))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(c, a)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, a))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(c, a)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, a))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(c, b)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, b))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(c, b)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, b))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(c, c)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, c))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(c, c)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, c))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1))))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1)))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1)))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(b, y0))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(b, y0)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(c, y0))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(c, y0)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(y0, cons_f(y1, a)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(y1, a))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(y0, cons_f(y1, b)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(y1, b))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(y0, cons_f(y1, c)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(y1, c))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(y0, cons_f(a, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(a, y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(y0, cons_f(b, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(b, y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(b, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(b, cons_f(y0, y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(c, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(c, cons_f(y0, y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(cons_f(y0, a), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, a), y1)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(cons_f(y0, b), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, b), y1)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(cons_f(y0, c), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, c), y1)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(cons_f(b, y0), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(b, y0), y1)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(cons_f(y0, y1), a))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, y1), a)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(cons_f(y0, y1), b))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, y1), b)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(cons_f(y0, y1), c))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, y1), c)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(cons_f(a, y0), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(a, y0), y1)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(c, a))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(c, a)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(c, b))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(c, b)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(c, c))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(c, c)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(y0, cons_f(c, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(c, y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(cons_f(c, y0), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(c, y0), y1)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(a, y0)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(a, y0))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(b, y0)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(b, y0))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(c, y0)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(c, y0))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(c, a)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(c, a))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(c, b)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(c, b))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(c, c)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(c, c))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(a, y0)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(a, y0))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(b, y0)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(b, y0))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(c, y0)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(c, y0))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, a))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, a)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, b))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, b)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, c))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, c)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(a, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(a, y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(b, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(b, y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(a, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(a, cons_f(y0, y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(b, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(b, cons_f(y0, y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(c, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(c, cons_f(y0, y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, a), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, a), y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, b), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, b), y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, c), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, c), y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(b, y0), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(b, y0), y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), a)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), a))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), b)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), b))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), c)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), c))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(a, y0), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(a, y0), y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(c, a)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(c, a))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(c, b)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(c, b))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(c, c)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(c, c))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(c, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(c, y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(c, y0), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(c, y0), y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(b, y0)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(b, y0))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(c, y0)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(c, y0))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, a))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, a)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, b))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, b)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, c))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, c)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(a, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(a, y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(b, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(b, y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(b, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(b, cons_f(y0, y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(c, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(c, cons_f(y0, y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, a), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, a), y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, b), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, b), y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, c), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, c), y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(b, y0), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(b, y0), y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), a)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), a))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), b)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), b))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), c)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), c))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(a, y0), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(a, y0), y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(c, a)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(c, a))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(c, b)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(c, b))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(c, c)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(c, c))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(c, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(c, y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(c, y0), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(c, y0), y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(a, y0))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(a, y0)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(b, y0))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(b, y0)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, y0))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, y0)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a)))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a))))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b)))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b))))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c)))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c))))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1)))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1))))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1)))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1))))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1)))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1))))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1)))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1))))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1)))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1))))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, a))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, a)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, b))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, b)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, c))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, c)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1)))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1))))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1)))))))
S tuples:
   F(f(f(a, z0), z1), z2) -> c9(F(f(z0, z2), f(z1, z2)), F(z0, z2), F(z1, z2))
   F(f(b, z0), z1) -> c10
   F(c, z0) -> c11
K tuples:none
Defined Rule Symbols:   encArg_1, f_2

Defined Pair Symbols:   F_2, ENCARG_1, ENCODE_F_2

Compound Symbols:   c9_3, c10, c11, c4_2, c1_1, c4_3, c4_1


----------------------------------------

(117) CdtForwardInstantiationProof (BOTH BOUNDS(ID, ID))
Use forward instantiation to replace ENCARG(cons_f(a, cons_f(a, y0))) -> c4(ENCARG(cons_f(a, y0))) by 
   ENCARG(cons_f(a, cons_f(a, cons_f(y1, a)))) -> c4(ENCARG(cons_f(a, cons_f(y1, a))))
   ENCARG(cons_f(a, cons_f(a, cons_f(y1, b)))) -> c4(ENCARG(cons_f(a, cons_f(y1, b))))
   ENCARG(cons_f(a, cons_f(a, cons_f(y1, c)))) -> c4(ENCARG(cons_f(a, cons_f(y1, c))))
   ENCARG(cons_f(a, cons_f(a, cons_f(y1, cons_f(y2, y3))))) -> c4(ENCARG(cons_f(a, cons_f(y1, cons_f(y2, y3)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, y1)))) -> c4(ENCARG(cons_f(a, cons_f(a, y1))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, y1)))) -> c4(ENCARG(cons_f(a, cons_f(b, y1))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y1, y2), y3)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y1, y2), y3))))
   ENCARG(cons_f(a, cons_f(a, cons_f(c, y1)))) -> c4(ENCARG(cons_f(a, cons_f(c, y1))))
   ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, a))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(y1, a)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, b))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(y1, b)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, c))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(y1, c)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(a, y1))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(a, y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(b, y1))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(b, y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(c, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(a, cons_f(c, cons_f(y0, y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, a), y1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, a), y1))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, b), y1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, b), y1))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, c), y1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, c), y1))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(b, y0), y1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(b, y0), y1))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), a)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, y1), a))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), b)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, y1), b))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), c)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, y1), c))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(a, y0), y1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(a, y0), y1))))
   ENCARG(cons_f(a, cons_f(a, cons_f(c, a)))) -> c4(ENCARG(cons_f(a, cons_f(c, a))))
   ENCARG(cons_f(a, cons_f(a, cons_f(c, b)))) -> c4(ENCARG(cons_f(a, cons_f(c, b))))
   ENCARG(cons_f(a, cons_f(a, cons_f(c, c)))) -> c4(ENCARG(cons_f(a, cons_f(c, c))))
   ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(c, y1))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(c, y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(c, y0), y1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(c, y0), y1))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(a, y0))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(a, y0)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, y0))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, y0)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(c, y0))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(c, y0)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, a)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, a))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, b)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, b))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, c)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, c))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(y0, cons_f(a, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(a, y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(y0, cons_f(b, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(b, y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(a, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(y0, y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(y0, y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(c, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(c, cons_f(y0, y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(y0, a), y1))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, a), y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(y0, b), y1))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, b), y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(y0, c), y1))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, c), y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(b, y0), y1))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(b, y0), y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), a))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), a)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), b))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), b)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), c))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), c)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(a, y0), y1))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(a, y0), y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(c, a))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(c, a)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(c, b))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(c, b)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(c, c))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(c, c)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(y0, cons_f(c, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(c, y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(c, y0), y1))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(c, y0), y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, y0))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, y0)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(c, y0))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(c, y0)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, a)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, a))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, b)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, b))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, c)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, c))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(y0, cons_f(a, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(a, y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(y0, cons_f(b, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(b, y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(y0, y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(c, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(c, cons_f(y0, y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(y0, a), y1))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, a), y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(y0, b), y1))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, b), y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(y0, c), y1))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, c), y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(b, y0), y1))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(b, y0), y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), a))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), a)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), b))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), b)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), c))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), c)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(a, y0), y1))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(a, y0), y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(c, a))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(c, a)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(c, b))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(c, b)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(c, c))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(c, c)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(y0, cons_f(c, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(c, y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(c, y0), y1))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(c, y0), y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(a, y0)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, y0))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, y0)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, y0))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(c, y0)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, y0))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(c, a)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, a))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(c, b)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, b))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(c, c)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, c))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1))))))

----------------------------------------

(118)
Obligation:
Complexity Dependency Tuples Problem

Rules:
   encArg(a) -> a
   encArg(b) -> b
   encArg(c) -> c
   encArg(cons_f(z0, z1)) -> f(encArg(z0), encArg(z1))
   f(f(f(a, z0), z1), z2) -> f(f(z0, z2), f(z1, z2))
   f(f(b, z0), z1) -> z0
   f(c, z0) -> z0
Tuples:
   F(f(f(a, z0), z1), z2) -> c9(F(f(z0, z2), f(z1, z2)), F(z0, z2), F(z1, z2))
   F(f(b, z0), z1) -> c10
   F(c, z0) -> c11
   ENCARG(cons_f(c, x1)) -> c4(F(c, encArg(x1)), ENCARG(x1))
   ENCODE_F(c, x1) -> c1(F(c, encArg(x1)))
   ENCARG(cons_f(x0, cons_f(x1, a))) -> c4(F(encArg(x0), f(encArg(x1), a)), ENCARG(x0), ENCARG(cons_f(x1, a)))
   ENCARG(cons_f(x0, cons_f(x1, b))) -> c4(F(encArg(x0), f(encArg(x1), b)), ENCARG(x0), ENCARG(cons_f(x1, b)))
   ENCARG(cons_f(x0, cons_f(x1, c))) -> c4(F(encArg(x0), f(encArg(x1), c)), ENCARG(x0), ENCARG(cons_f(x1, c)))
   ENCARG(cons_f(x0, cons_f(x1, cons_f(z0, z1)))) -> c4(F(encArg(x0), f(encArg(x1), f(encArg(z0), encArg(z1)))), ENCARG(x0), ENCARG(cons_f(x1, cons_f(z0, z1))))
   ENCARG(cons_f(x0, cons_f(a, x2))) -> c4(F(encArg(x0), f(a, encArg(x2))), ENCARG(x0), ENCARG(cons_f(a, x2)))
   ENCARG(cons_f(x0, cons_f(b, x2))) -> c4(F(encArg(x0), f(b, encArg(x2))), ENCARG(x0), ENCARG(cons_f(b, x2)))
   ENCARG(cons_f(x0, cons_f(cons_f(z0, z1), x2))) -> c4(F(encArg(x0), f(f(encArg(z0), encArg(z1)), encArg(x2))), ENCARG(x0), ENCARG(cons_f(cons_f(z0, z1), x2)))
   ENCARG(cons_f(cons_f(z0, z1), cons_f(x1, x2))) -> c4(F(f(encArg(z0), encArg(z1)), f(encArg(x1), encArg(x2))), ENCARG(cons_f(z0, z1)), ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(c, cons_f(x1, x2))) -> c4(F(c, f(encArg(x1), encArg(x2))), ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(cons_f(x0, a), x2)) -> c4(F(f(encArg(x0), a), encArg(x2)), ENCARG(cons_f(x0, a)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, b), x2)) -> c4(F(f(encArg(x0), b), encArg(x2)), ENCARG(cons_f(x0, b)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, c), x2)) -> c4(F(f(encArg(x0), c), encArg(x2)), ENCARG(cons_f(x0, c)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, cons_f(z0, z1)), x2)) -> c4(F(f(encArg(x0), f(encArg(z0), encArg(z1))), encArg(x2)), ENCARG(cons_f(x0, cons_f(z0, z1))), ENCARG(x2))
   ENCARG(cons_f(cons_f(b, x1), x2)) -> c4(F(f(b, encArg(x1)), encArg(x2)), ENCARG(cons_f(b, x1)), ENCARG(x2))
   ENCARG(cons_f(cons_f(cons_f(z0, z1), x1), x2)) -> c4(F(f(f(encArg(z0), encArg(z1)), encArg(x1)), encArg(x2)), ENCARG(cons_f(cons_f(z0, z1), x1)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, x1), a)) -> c4(F(f(encArg(x0), encArg(x1)), a), ENCARG(cons_f(x0, x1)))
   ENCARG(cons_f(cons_f(x0, x1), b)) -> c4(F(f(encArg(x0), encArg(x1)), b), ENCARG(cons_f(x0, x1)))
   ENCARG(cons_f(cons_f(x0, x1), c)) -> c4(F(f(encArg(x0), encArg(x1)), c), ENCARG(cons_f(x0, x1)))
   ENCARG(cons_f(c, a)) -> c4(F(c, a))
   ENCARG(cons_f(c, b)) -> c4(F(c, b))
   ENCARG(cons_f(c, c)) -> c4(F(c, c))
   ENCODE_F(cons_f(z0, z1), a) -> c1(F(f(encArg(z0), encArg(z1)), a))
   ENCODE_F(cons_f(z0, z1), b) -> c1(F(f(encArg(z0), encArg(z1)), b))
   ENCODE_F(cons_f(z0, z1), c) -> c1(F(f(encArg(z0), encArg(z1)), c))
   ENCODE_F(x0, cons_f(x1, a)) -> c1(F(encArg(x0), f(encArg(x1), a)))
   ENCODE_F(x0, cons_f(x1, b)) -> c1(F(encArg(x0), f(encArg(x1), b)))
   ENCODE_F(x0, cons_f(x1, c)) -> c1(F(encArg(x0), f(encArg(x1), c)))
   ENCODE_F(x0, cons_f(x1, cons_f(z0, z1))) -> c1(F(encArg(x0), f(encArg(x1), f(encArg(z0), encArg(z1)))))
   ENCODE_F(x0, cons_f(a, x2)) -> c1(F(encArg(x0), f(a, encArg(x2))))
   ENCODE_F(x0, cons_f(b, x2)) -> c1(F(encArg(x0), f(b, encArg(x2))))
   ENCODE_F(x0, cons_f(cons_f(z0, z1), x2)) -> c1(F(encArg(x0), f(f(encArg(z0), encArg(z1)), encArg(x2))))
   ENCODE_F(c, cons_f(x1, x2)) -> c1(F(c, f(encArg(x1), encArg(x2))))
   ENCODE_F(cons_f(z0, z1), cons_f(x1, x2)) -> c1(F(f(encArg(z0), encArg(z1)), f(encArg(x1), encArg(x2))))
   ENCODE_F(cons_f(x0, a), x2) -> c1(F(f(encArg(x0), a), encArg(x2)))
   ENCODE_F(cons_f(x0, b), x2) -> c1(F(f(encArg(x0), b), encArg(x2)))
   ENCODE_F(cons_f(x0, c), x2) -> c1(F(f(encArg(x0), c), encArg(x2)))
   ENCODE_F(cons_f(x0, cons_f(z0, z1)), x2) -> c1(F(f(encArg(x0), f(encArg(z0), encArg(z1))), encArg(x2)))
   ENCODE_F(cons_f(b, x1), x2) -> c1(F(f(b, encArg(x1)), encArg(x2)))
   ENCODE_F(cons_f(cons_f(z0, z1), x1), x2) -> c1(F(f(f(encArg(z0), encArg(z1)), encArg(x1)), encArg(x2)))
   ENCARG(cons_f(z0, cons_f(c, z1))) -> c4(F(encArg(z0), encArg(z1)), ENCARG(z0), ENCARG(cons_f(c, z1)))
   ENCARG(cons_f(cons_f(c, z0), z1)) -> c4(F(encArg(z0), encArg(z1)), ENCARG(cons_f(c, z0)), ENCARG(z1))
   ENCODE_F(z0, cons_f(c, z1)) -> c1(F(encArg(z0), encArg(z1)))
   ENCODE_F(cons_f(c, z0), z1) -> c1(F(encArg(z0), encArg(z1)))
   ENCARG(cons_f(a, cons_f(b, y0))) -> c4(ENCARG(cons_f(b, y0)))
   ENCARG(cons_f(a, cons_f(c, y0))) -> c4(ENCARG(cons_f(c, y0)))
   ENCARG(cons_f(a, cons_f(y0, cons_f(y1, a)))) -> c4(ENCARG(cons_f(y0, cons_f(y1, a))))
   ENCARG(cons_f(a, cons_f(y0, cons_f(y1, b)))) -> c4(ENCARG(cons_f(y0, cons_f(y1, b))))
   ENCARG(cons_f(a, cons_f(y0, cons_f(y1, c)))) -> c4(ENCARG(cons_f(y0, cons_f(y1, c))))
   ENCARG(cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))) -> c4(ENCARG(cons_f(y0, cons_f(y1, cons_f(y2, y3)))))
   ENCARG(cons_f(a, cons_f(y0, cons_f(a, y1)))) -> c4(ENCARG(cons_f(y0, cons_f(a, y1))))
   ENCARG(cons_f(a, cons_f(y0, cons_f(b, y1)))) -> c4(ENCARG(cons_f(y0, cons_f(b, y1))))
   ENCARG(cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))) -> c4(ENCARG(cons_f(y0, cons_f(cons_f(y1, y2), y3))))
   ENCARG(cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))) -> c4(ENCARG(cons_f(cons_f(y0, y1), cons_f(y2, y3))))
   ENCARG(cons_f(a, cons_f(a, cons_f(y0, y1)))) -> c4(ENCARG(cons_f(a, cons_f(y0, y1))))
   ENCARG(cons_f(a, cons_f(b, cons_f(y0, y1)))) -> c4(ENCARG(cons_f(b, cons_f(y0, y1))))
   ENCARG(cons_f(a, cons_f(c, cons_f(y0, y1)))) -> c4(ENCARG(cons_f(c, cons_f(y0, y1))))
   ENCARG(cons_f(a, cons_f(cons_f(y0, a), y1))) -> c4(ENCARG(cons_f(cons_f(y0, a), y1)))
   ENCARG(cons_f(a, cons_f(cons_f(y0, b), y1))) -> c4(ENCARG(cons_f(cons_f(y0, b), y1)))
   ENCARG(cons_f(a, cons_f(cons_f(y0, c), y1))) -> c4(ENCARG(cons_f(cons_f(y0, c), y1)))
   ENCARG(cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))) -> c4(ENCARG(cons_f(cons_f(y0, cons_f(y1, y2)), y3)))
   ENCARG(cons_f(a, cons_f(cons_f(b, y0), y1))) -> c4(ENCARG(cons_f(cons_f(b, y0), y1)))
   ENCARG(cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))) -> c4(ENCARG(cons_f(cons_f(cons_f(y0, y1), y2), y3)))
   ENCARG(cons_f(a, cons_f(cons_f(y0, y1), a))) -> c4(ENCARG(cons_f(cons_f(y0, y1), a)))
   ENCARG(cons_f(a, cons_f(cons_f(y0, y1), b))) -> c4(ENCARG(cons_f(cons_f(y0, y1), b)))
   ENCARG(cons_f(a, cons_f(cons_f(y0, y1), c))) -> c4(ENCARG(cons_f(cons_f(y0, y1), c)))
   ENCARG(cons_f(a, cons_f(cons_f(a, y0), y1))) -> c4(ENCARG(cons_f(cons_f(a, y0), y1)))
   ENCARG(cons_f(a, cons_f(c, a))) -> c4(ENCARG(cons_f(c, a)))
   ENCARG(cons_f(a, cons_f(c, b))) -> c4(ENCARG(cons_f(c, b)))
   ENCARG(cons_f(a, cons_f(c, c))) -> c4(ENCARG(cons_f(c, c)))
   ENCARG(cons_f(a, cons_f(y0, cons_f(c, y1)))) -> c4(ENCARG(cons_f(y0, cons_f(c, y1))))
   ENCARG(cons_f(a, cons_f(cons_f(c, y0), y1))) -> c4(ENCARG(cons_f(cons_f(c, y0), y1)))
   ENCARG(cons_f(b, cons_f(b, y0))) -> c4(ENCARG(cons_f(b, y0)))
   ENCARG(cons_f(b, cons_f(c, y0))) -> c4(ENCARG(cons_f(c, y0)))
   ENCARG(cons_f(b, cons_f(y0, cons_f(y1, a)))) -> c4(ENCARG(cons_f(y0, cons_f(y1, a))))
   ENCARG(cons_f(b, cons_f(y0, cons_f(y1, b)))) -> c4(ENCARG(cons_f(y0, cons_f(y1, b))))
   ENCARG(cons_f(b, cons_f(y0, cons_f(y1, c)))) -> c4(ENCARG(cons_f(y0, cons_f(y1, c))))
   ENCARG(cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3))))) -> c4(ENCARG(cons_f(y0, cons_f(y1, cons_f(y2, y3)))))
   ENCARG(cons_f(b, cons_f(y0, cons_f(a, y1)))) -> c4(ENCARG(cons_f(y0, cons_f(a, y1))))
   ENCARG(cons_f(b, cons_f(y0, cons_f(b, y1)))) -> c4(ENCARG(cons_f(y0, cons_f(b, y1))))
   ENCARG(cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3)))) -> c4(ENCARG(cons_f(y0, cons_f(cons_f(y1, y2), y3))))
   ENCARG(cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3)))) -> c4(ENCARG(cons_f(cons_f(y0, y1), cons_f(y2, y3))))
   ENCARG(cons_f(b, cons_f(a, cons_f(y0, y1)))) -> c4(ENCARG(cons_f(a, cons_f(y0, y1))))
   ENCARG(cons_f(b, cons_f(b, cons_f(y0, y1)))) -> c4(ENCARG(cons_f(b, cons_f(y0, y1))))
   ENCARG(cons_f(b, cons_f(c, cons_f(y0, y1)))) -> c4(ENCARG(cons_f(c, cons_f(y0, y1))))
   ENCARG(cons_f(b, cons_f(cons_f(y0, a), y1))) -> c4(ENCARG(cons_f(cons_f(y0, a), y1)))
   ENCARG(cons_f(b, cons_f(cons_f(y0, b), y1))) -> c4(ENCARG(cons_f(cons_f(y0, b), y1)))
   ENCARG(cons_f(b, cons_f(cons_f(y0, c), y1))) -> c4(ENCARG(cons_f(cons_f(y0, c), y1)))
   ENCARG(cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3))) -> c4(ENCARG(cons_f(cons_f(y0, cons_f(y1, y2)), y3)))
   ENCARG(cons_f(b, cons_f(cons_f(b, y0), y1))) -> c4(ENCARG(cons_f(cons_f(b, y0), y1)))
   ENCARG(cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3))) -> c4(ENCARG(cons_f(cons_f(cons_f(y0, y1), y2), y3)))
   ENCARG(cons_f(b, cons_f(cons_f(y0, y1), a))) -> c4(ENCARG(cons_f(cons_f(y0, y1), a)))
   ENCARG(cons_f(b, cons_f(cons_f(y0, y1), b))) -> c4(ENCARG(cons_f(cons_f(y0, y1), b)))
   ENCARG(cons_f(b, cons_f(cons_f(y0, y1), c))) -> c4(ENCARG(cons_f(cons_f(y0, y1), c)))
   ENCARG(cons_f(b, cons_f(cons_f(a, y0), y1))) -> c4(ENCARG(cons_f(cons_f(a, y0), y1)))
   ENCARG(cons_f(b, cons_f(c, a))) -> c4(ENCARG(cons_f(c, a)))
   ENCARG(cons_f(b, cons_f(c, b))) -> c4(ENCARG(cons_f(c, b)))
   ENCARG(cons_f(b, cons_f(c, c))) -> c4(ENCARG(cons_f(c, c)))
   ENCARG(cons_f(b, cons_f(y0, cons_f(c, y1)))) -> c4(ENCARG(cons_f(y0, cons_f(c, y1))))
   ENCARG(cons_f(b, cons_f(cons_f(c, y0), y1))) -> c4(ENCARG(cons_f(cons_f(c, y0), y1)))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, y0)))) -> c4(ENCARG(cons_f(a, cons_f(a, y0))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, y0)))) -> c4(ENCARG(cons_f(a, cons_f(b, y0))))
   ENCARG(cons_f(b, cons_f(a, cons_f(c, y0)))) -> c4(ENCARG(cons_f(a, cons_f(c, y0))))
   ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(y1, a)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(y1, b)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(y1, c)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(a, y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(b, y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(a, cons_f(c, cons_f(y0, y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, a), y1))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, b), y1))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, c), y1))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(b, y0), y1))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, y1), a))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, y1), b))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, y1), c))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(a, y0), y1))))
   ENCARG(cons_f(b, cons_f(a, cons_f(c, a)))) -> c4(ENCARG(cons_f(a, cons_f(c, a))))
   ENCARG(cons_f(b, cons_f(a, cons_f(c, b)))) -> c4(ENCARG(cons_f(a, cons_f(c, b))))
   ENCARG(cons_f(b, cons_f(a, cons_f(c, c)))) -> c4(ENCARG(cons_f(a, cons_f(c, c))))
   ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(c, y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(c, y0), y1))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, y0)))) -> c4(ENCARG(cons_f(a, cons_f(a, y0))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, y0)))) -> c4(ENCARG(cons_f(a, cons_f(b, y0))))
   ENCARG(cons_f(a, cons_f(a, cons_f(c, y0)))) -> c4(ENCARG(cons_f(a, cons_f(c, y0))))
   ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, a))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(y1, a)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, b))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(y1, b)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, c))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(y1, c)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(a, y1))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(a, y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(b, y1))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(b, y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(c, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(a, cons_f(c, cons_f(y0, y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, a), y1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, a), y1))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, b), y1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, b), y1))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, c), y1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, c), y1))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(b, y0), y1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(b, y0), y1))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), a)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, y1), a))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), b)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, y1), b))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), c)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, y1), c))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(a, y0), y1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(a, y0), y1))))
   ENCARG(cons_f(a, cons_f(a, cons_f(c, a)))) -> c4(ENCARG(cons_f(a, cons_f(c, a))))
   ENCARG(cons_f(a, cons_f(a, cons_f(c, b)))) -> c4(ENCARG(cons_f(a, cons_f(c, b))))
   ENCARG(cons_f(a, cons_f(a, cons_f(c, c)))) -> c4(ENCARG(cons_f(a, cons_f(c, c))))
   ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(c, y1))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(c, y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(c, y0), y1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(c, y0), y1))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, y0)))) -> c4(ENCARG(cons_f(b, cons_f(b, y0))))
   ENCARG(cons_f(a, cons_f(b, cons_f(c, y0)))) -> c4(ENCARG(cons_f(b, cons_f(c, y0))))
   ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, a))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(y1, a)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, b))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(y1, b)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, c))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(y1, c)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(a, y1))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(a, y1)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(b, y1))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(b, y1)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3))))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, y1)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(y0, y1)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(c, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(b, cons_f(c, cons_f(y0, y1)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, a), y1)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, a), y1))))
   ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, b), y1)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, b), y1))))
   ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, c), y1)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, c), y1))))
   ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))
   ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(b, y0), y1)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(b, y0), y1))))
   ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3))))
   ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), a)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, y1), a))))
   ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), b)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, y1), b))))
   ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), c)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, y1), c))))
   ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(a, y0), y1)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(a, y0), y1))))
   ENCARG(cons_f(a, cons_f(b, cons_f(c, a)))) -> c4(ENCARG(cons_f(b, cons_f(c, a))))
   ENCARG(cons_f(a, cons_f(b, cons_f(c, b)))) -> c4(ENCARG(cons_f(b, cons_f(c, b))))
   ENCARG(cons_f(a, cons_f(b, cons_f(c, c)))) -> c4(ENCARG(cons_f(b, cons_f(c, c))))
   ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(c, y1))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(c, y1)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(c, y0), y1)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(c, y0), y1))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, y0))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, y0)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, y0))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, y0)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, y0))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(c, y0)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, a))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(c, a)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, b))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(c, b)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, c))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(c, c)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(b, y0)))) -> c4(ENCARG(cons_f(b, cons_f(b, y0))))
   ENCARG(cons_f(b, cons_f(b, cons_f(c, y0)))) -> c4(ENCARG(cons_f(b, cons_f(c, y0))))
   ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(y1, a))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(y1, a)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(y1, b))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(y1, b)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(y1, c))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(y1, c)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))
   ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(a, y1))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(a, y1)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(b, y1))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(b, y1)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3))))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, y1)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(b, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(y0, y1)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(c, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(b, cons_f(c, cons_f(y0, y1)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, a), y1)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, a), y1))))
   ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, b), y1)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, b), y1))))
   ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, c), y1)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, c), y1))))
   ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))
   ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(b, y0), y1)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(b, y0), y1))))
   ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3))))
   ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, y1), a)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, y1), a))))
   ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, y1), b)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, y1), b))))
   ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, y1), c)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, y1), c))))
   ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(a, y0), y1)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(a, y0), y1))))
   ENCARG(cons_f(b, cons_f(b, cons_f(c, a)))) -> c4(ENCARG(cons_f(b, cons_f(c, a))))
   ENCARG(cons_f(b, cons_f(b, cons_f(c, b)))) -> c4(ENCARG(cons_f(b, cons_f(c, b))))
   ENCARG(cons_f(b, cons_f(b, cons_f(c, c)))) -> c4(ENCARG(cons_f(b, cons_f(c, c))))
   ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(c, y1))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(c, y1)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(c, y0), y1)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(c, y0), y1))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(a, y0))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, y0)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(b, y0))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, y0)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(c, y0))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(c, y0)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a))))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b))))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c))))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1))))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1))))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1))))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1))))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1))))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(c, a))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(c, a)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(c, b))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(c, b)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(c, c))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(c, c)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1))))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(a, y0))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(a, y0)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(b, y0))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, y0)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(c, y0))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(c, y0)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, a)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, a))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, b)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, b))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, c)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, c))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(a, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(a, y1))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(b, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(b, y1))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(a, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(y0, y1))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(b, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(y0, y1))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(c, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(c, cons_f(y0, y1))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, a), y1))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, a), y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, b), y1))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, b), y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, c), y1))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, c), y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(b, y0), y1))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(b, y0), y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), a))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), a)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), b))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), b)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), c))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), c)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(a, y0), y1))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(a, y0), y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(c, a))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(c, a)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(c, b))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(c, b)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(c, c))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(c, c)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(c, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(c, y1))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(c, y0), y1))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(c, y0), y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(b, y0))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, y0)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(c, y0))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(c, y0)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, a)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, a))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, b)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, b))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, c)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, c))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(a, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(a, y1))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(b, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(b, y1))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, y1))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(b, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(y0, y1))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(c, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(c, cons_f(y0, y1))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, a), y1))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, a), y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, b), y1))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, b), y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, c), y1))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, c), y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(b, y0), y1))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(b, y0), y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), a))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), a)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), b))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), b)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), c))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), c)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(a, y0), y1))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(a, y0), y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(c, a))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(c, a)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(c, b))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(c, b)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(c, c))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(c, c)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(c, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(c, y1))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(c, y0), y1))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(c, y0), y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(a, y0)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, y0))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(b, y0)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, y0))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, y0)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, y0))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a)))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b)))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c)))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1)))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1)))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1)))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1)))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1)))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, a)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, a))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, b)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, b))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, c)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, c))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1)))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(c, y0))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(c, y0)))
   ENCARG(cons_f(cons_f(a, cons_f(y1, a)), z1)) -> c4(ENCARG(cons_f(a, cons_f(y1, a))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(y0, cons_f(y1, a)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(y0, cons_f(y1, a))))
   ENCARG(cons_f(cons_f(a, cons_f(y1, b)), z1)) -> c4(ENCARG(cons_f(a, cons_f(y1, b))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(y0, cons_f(y1, b)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(y0, cons_f(y1, b))))
   ENCARG(cons_f(cons_f(a, cons_f(y1, c)), z1)) -> c4(ENCARG(cons_f(a, cons_f(y1, c))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(y0, cons_f(y1, c)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(y0, cons_f(y1, c))))
   ENCARG(cons_f(cons_f(a, cons_f(y1, cons_f(y2, y3))), z1)) -> c4(ENCARG(cons_f(a, cons_f(y1, cons_f(y2, y3)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(y0, cons_f(y1, cons_f(y2, y3))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(y0, cons_f(y1, cons_f(y2, y3)))))
   ENCARG(cons_f(cons_f(a, cons_f(a, y1)), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, y1))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(y0, cons_f(a, y1)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(y0, cons_f(a, y1))))
   ENCARG(cons_f(cons_f(a, cons_f(b, y1)), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, y1))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(y0, cons_f(b, y1)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(y0, cons_f(b, y1))))
   ENCARG(cons_f(cons_f(a, cons_f(cons_f(y1, y2), y3)), z1)) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y1, y2), y3))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(y0, cons_f(cons_f(y1, y2), y3)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(y0, cons_f(cons_f(y1, y2), y3))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(cons_f(y0, y1), cons_f(y2, y3)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(cons_f(y0, y1), cons_f(y2, y3))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(c, cons_f(y0, y1)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(c, cons_f(y0, y1))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(cons_f(y0, a), y1))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(cons_f(y0, a), y1)))
   ENCARG(cons_f(cons_f(a, z0), cons_f(cons_f(y0, b), y1))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(cons_f(y0, b), y1)))
   ENCARG(cons_f(cons_f(a, z0), cons_f(cons_f(y0, c), y1))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(cons_f(y0, c), y1)))
   ENCARG(cons_f(cons_f(a, z0), cons_f(cons_f(y0, cons_f(y1, y2)), y3))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(cons_f(y0, cons_f(y1, y2)), y3)))
   ENCARG(cons_f(cons_f(a, z0), cons_f(cons_f(b, y0), y1))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(cons_f(b, y0), y1)))
   ENCARG(cons_f(cons_f(a, z0), cons_f(cons_f(cons_f(y0, y1), y2), y3))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(cons_f(cons_f(y0, y1), y2), y3)))
   ENCARG(cons_f(cons_f(a, z0), cons_f(cons_f(y0, y1), a))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(cons_f(y0, y1), a)))
   ENCARG(cons_f(cons_f(a, z0), cons_f(cons_f(y0, y1), b))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(cons_f(y0, y1), b)))
   ENCARG(cons_f(cons_f(a, z0), cons_f(cons_f(y0, y1), c))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(cons_f(y0, y1), c)))
   ENCARG(cons_f(cons_f(a, z0), cons_f(cons_f(a, y0), y1))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(cons_f(a, y0), y1)))
   ENCARG(cons_f(cons_f(a, z0), cons_f(c, a))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(c, a)))
   ENCARG(cons_f(cons_f(a, z0), cons_f(c, b))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(c, b)))
   ENCARG(cons_f(cons_f(a, z0), cons_f(c, c))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(c, c)))
   ENCARG(cons_f(cons_f(a, cons_f(c, y1)), z1)) -> c4(ENCARG(cons_f(a, cons_f(c, y1))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(y0, cons_f(c, y1)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(y0, cons_f(c, y1))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(cons_f(c, y0), y1))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(cons_f(c, y0), y1)))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, y0)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, y0))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, y0)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, y0))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(c, y0)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(c, y0))))
   ENCARG(cons_f(cons_f(a, cons_f(y0, cons_f(y1, a))), z1)) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(y1, a)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(y0, cons_f(y1, a))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(y0, cons_f(y1, a)))))
   ENCARG(cons_f(cons_f(a, cons_f(y0, cons_f(y1, b))), z1)) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(y1, b)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(y0, cons_f(y1, b))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(y0, cons_f(y1, b)))))
   ENCARG(cons_f(cons_f(a, cons_f(y0, cons_f(y1, c))), z1)) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(y1, c)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(y0, cons_f(y1, c))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(y0, cons_f(y1, c)))))
   ENCARG(cons_f(cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))
   ENCARG(cons_f(cons_f(a, cons_f(y0, cons_f(a, y1))), z1)) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(a, y1)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(y0, cons_f(a, y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(y0, cons_f(a, y1)))))
   ENCARG(cons_f(cons_f(a, cons_f(y0, cons_f(b, y1))), z1)) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(b, y1)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(y0, cons_f(b, y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(y0, cons_f(b, y1)))))
   ENCARG(cons_f(cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))), z1)) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))
   ENCARG(cons_f(cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))), z1)) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(y0, y1))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, y1)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(y0, y1)))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(y0, y1))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, y1)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(y0, y1)))))
   ENCARG(cons_f(cons_f(a, cons_f(c, cons_f(y0, y1))), z1)) -> c4(ENCARG(cons_f(a, cons_f(c, cons_f(y0, y1)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(c, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(c, cons_f(y0, y1)))))
   ENCARG(cons_f(cons_f(a, cons_f(cons_f(y0, a), y1)), z1)) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, a), y1))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(cons_f(y0, a), y1)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(cons_f(y0, a), y1))))
   ENCARG(cons_f(cons_f(a, cons_f(cons_f(y0, b), y1)), z1)) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, b), y1))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(cons_f(y0, b), y1)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(cons_f(y0, b), y1))))
   ENCARG(cons_f(cons_f(a, cons_f(cons_f(y0, c), y1)), z1)) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, c), y1))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(cons_f(y0, c), y1)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(cons_f(y0, c), y1))))
   ENCARG(cons_f(cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)), z1)) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))
   ENCARG(cons_f(cons_f(a, cons_f(cons_f(b, y0), y1)), z1)) -> c4(ENCARG(cons_f(a, cons_f(cons_f(b, y0), y1))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(cons_f(b, y0), y1)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(cons_f(b, y0), y1))))
   ENCARG(cons_f(cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)), z1)) -> c4(ENCARG(cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))
   ENCARG(cons_f(cons_f(a, cons_f(cons_f(y0, y1), a)), z1)) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, y1), a))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(cons_f(y0, y1), a)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(cons_f(y0, y1), a))))
   ENCARG(cons_f(cons_f(a, cons_f(cons_f(y0, y1), b)), z1)) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, y1), b))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(cons_f(y0, y1), b)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(cons_f(y0, y1), b))))
   ENCARG(cons_f(cons_f(a, cons_f(cons_f(y0, y1), c)), z1)) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, y1), c))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(cons_f(y0, y1), c)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(cons_f(y0, y1), c))))
   ENCARG(cons_f(cons_f(a, cons_f(cons_f(a, y0), y1)), z1)) -> c4(ENCARG(cons_f(a, cons_f(cons_f(a, y0), y1))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(cons_f(a, y0), y1)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(cons_f(a, y0), y1))))
   ENCARG(cons_f(cons_f(a, cons_f(c, a)), z1)) -> c4(ENCARG(cons_f(a, cons_f(c, a))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(c, a)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(c, a))))
   ENCARG(cons_f(cons_f(a, cons_f(c, b)), z1)) -> c4(ENCARG(cons_f(a, cons_f(c, b))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(c, b)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(c, b))))
   ENCARG(cons_f(cons_f(a, cons_f(c, c)), z1)) -> c4(ENCARG(cons_f(a, cons_f(c, c))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(c, c)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(c, c))))
   ENCARG(cons_f(cons_f(a, cons_f(y0, cons_f(c, y1))), z1)) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(c, y1)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(y0, cons_f(c, y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(y0, cons_f(c, y1)))))
   ENCARG(cons_f(cons_f(a, cons_f(cons_f(c, y0), y1)), z1)) -> c4(ENCARG(cons_f(a, cons_f(cons_f(c, y0), y1))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(cons_f(c, y0), y1)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(cons_f(c, y0), y1))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, y0)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, y0))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(c, y0)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(c, y0))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(y0, cons_f(y1, a))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(y0, cons_f(y1, a)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(y0, cons_f(y1, b))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(y0, cons_f(y1, b)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(y0, cons_f(y1, c))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(y0, cons_f(y1, c)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(y0, cons_f(a, y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(y0, cons_f(a, y1)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(y0, cons_f(b, y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(y0, cons_f(b, y1)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(y0, y1)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(y0, y1)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(c, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(c, cons_f(y0, y1)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(cons_f(y0, a), y1)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(cons_f(y0, a), y1))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(cons_f(y0, b), y1)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(cons_f(y0, b), y1))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(cons_f(y0, c), y1)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(cons_f(y0, c), y1))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(cons_f(b, y0), y1)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(cons_f(b, y0), y1))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(cons_f(y0, y1), a)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(cons_f(y0, y1), a))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(cons_f(y0, y1), b)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(cons_f(y0, y1), b))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(cons_f(y0, y1), c)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(cons_f(y0, y1), c))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(cons_f(a, y0), y1)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(cons_f(a, y0), y1))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(c, a)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(c, a))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(c, b)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(c, b))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(c, c)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(c, c))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(y0, cons_f(c, y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(y0, cons_f(c, y1)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(cons_f(c, y0), y1)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(cons_f(c, y0), y1))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, y0))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, y0)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, y0))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, y0)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(c, y0))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(c, y0)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(c, a))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(c, a)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(c, b))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(c, b)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(c, c))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(c, c)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1)))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(a, y0))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(a, y0)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(a, y0))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(a, y0)))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(b, y0))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, y0)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(b, y0))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(b, y0)))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(c, y0))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(c, y0)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(c, y0))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(c, y0)))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, a)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, a))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, a)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, a))))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, b)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, b))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, b)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, b))))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, c)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, c))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, c)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, c))))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(y0, cons_f(a, y1)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(a, y1))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(y0, cons_f(a, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(a, y1))))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(y0, cons_f(b, y1)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(b, y1))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(y0, cons_f(b, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(b, y1))))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(a, cons_f(y0, y1)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(y0, y1))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(a, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(y0, y1))))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(b, cons_f(y0, y1)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(y0, y1))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(b, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(y0, y1))))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(c, cons_f(y0, y1)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(c, cons_f(y0, y1))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(c, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(c, cons_f(y0, y1))))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(cons_f(y0, a), y1))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, a), y1)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(cons_f(y0, a), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, a), y1)))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(cons_f(y0, b), y1))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, b), y1)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(cons_f(y0, b), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, b), y1)))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(cons_f(y0, c), y1))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, c), y1)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(cons_f(y0, c), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, c), y1)))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(cons_f(b, y0), y1))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(b, y0), y1)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(cons_f(b, y0), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(b, y0), y1)))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), a))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), a)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), a))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), a)))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), b))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), b)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), b))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), b)))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), c))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), c)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), c))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), c)))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(cons_f(a, y0), y1))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(a, y0), y1)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(cons_f(a, y0), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(a, y0), y1)))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(c, a))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(c, a)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(c, a))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(c, a)))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(c, b))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(c, b)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(c, b))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(c, b)))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(c, c))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(c, c)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(c, c))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(c, c)))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(y0, cons_f(c, y1)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(c, y1))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(y0, cons_f(c, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(c, y1))))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(cons_f(c, y0), y1))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(c, y0), y1)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(cons_f(c, y0), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(c, y0), y1)))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(b, y0))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, y0)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(b, y0))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(b, y0)))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(c, y0))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(c, y0)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(c, y0))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(c, y0)))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, a)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, a))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, a)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, a))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, b)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, b))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, b)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, b))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, c)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, c))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, c)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, c))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3))))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(y0, cons_f(a, y1)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(a, y1))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(y0, cons_f(a, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(a, y1))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(y0, cons_f(b, y1)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(b, y1))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(y0, cons_f(b, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(b, y1))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, y1)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, y1))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, y1))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(b, cons_f(y0, y1)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(y0, y1))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(b, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(y0, y1))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(c, cons_f(y0, y1)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(c, cons_f(y0, y1))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(c, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(c, cons_f(y0, y1))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(cons_f(y0, a), y1))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, a), y1)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(cons_f(y0, a), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, a), y1)))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(cons_f(y0, b), y1))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, b), y1)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(cons_f(y0, b), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, b), y1)))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(cons_f(y0, c), y1))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, c), y1)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(cons_f(y0, c), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, c), y1)))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(cons_f(b, y0), y1))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(b, y0), y1)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(cons_f(b, y0), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(b, y0), y1)))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), a))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), a)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), a))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), a)))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), b))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), b)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), b))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), b)))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), c))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), c)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), c))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), c)))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(cons_f(a, y0), y1))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(a, y0), y1)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(cons_f(a, y0), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(a, y0), y1)))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(c, a))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(c, a)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(c, a))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(c, a)))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(c, b))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(c, b)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(c, b))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(c, b)))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(c, c))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(c, c)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(c, c))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(c, c)))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(y0, cons_f(c, y1)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(c, y1))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(y0, cons_f(c, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(c, y1))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(cons_f(c, y0), y1))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(c, y0), y1)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(cons_f(c, y0), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(c, y0), y1)))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(a, y0)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, y0))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(a, y0)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, y0))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(b, y0)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, y0))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(b, y0)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, y0))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(c, y0)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, y0))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(c, y0)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, y0))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a))))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a)))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a)))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b))))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b)))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b)))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c))))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c)))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c)))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1))))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1)))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1)))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1))))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1)))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1)))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1))))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1)))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1)))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1))))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1)))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1)))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1))))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1)))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1)))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(c, a)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, a))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(c, a)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, a))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(c, b)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, b))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(c, b)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, b))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(c, c)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, c))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(c, c)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, c))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1))))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1)))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1)))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(b, y0))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(b, y0)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(c, y0))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(c, y0)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(y0, cons_f(y1, a)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(y1, a))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(y0, cons_f(y1, b)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(y1, b))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(y0, cons_f(y1, c)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(y1, c))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(y0, cons_f(a, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(a, y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(y0, cons_f(b, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(b, y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(b, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(b, cons_f(y0, y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(c, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(c, cons_f(y0, y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(cons_f(y0, a), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, a), y1)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(cons_f(y0, b), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, b), y1)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(cons_f(y0, c), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, c), y1)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(cons_f(b, y0), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(b, y0), y1)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(cons_f(y0, y1), a))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, y1), a)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(cons_f(y0, y1), b))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, y1), b)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(cons_f(y0, y1), c))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, y1), c)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(cons_f(a, y0), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(a, y0), y1)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(c, a))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(c, a)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(c, b))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(c, b)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(c, c))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(c, c)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(y0, cons_f(c, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(c, y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(cons_f(c, y0), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(c, y0), y1)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(a, y0)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(a, y0))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(b, y0)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(b, y0))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(c, y0)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(c, y0))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(c, a)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(c, a))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(c, b)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(c, b))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(c, c)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(c, c))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(a, y0)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(a, y0))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(b, y0)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(b, y0))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(c, y0)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(c, y0))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, a))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, a)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, b))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, b)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, c))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, c)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(a, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(a, y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(b, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(b, y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(a, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(a, cons_f(y0, y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(b, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(b, cons_f(y0, y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(c, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(c, cons_f(y0, y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, a), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, a), y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, b), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, b), y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, c), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, c), y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(b, y0), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(b, y0), y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), a)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), a))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), b)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), b))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), c)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), c))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(a, y0), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(a, y0), y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(c, a)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(c, a))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(c, b)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(c, b))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(c, c)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(c, c))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(c, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(c, y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(c, y0), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(c, y0), y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(b, y0)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(b, y0))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(c, y0)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(c, y0))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, a))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, a)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, b))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, b)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, c))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, c)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(a, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(a, y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(b, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(b, y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(b, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(b, cons_f(y0, y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(c, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(c, cons_f(y0, y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, a), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, a), y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, b), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, b), y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, c), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, c), y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(b, y0), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(b, y0), y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), a)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), a))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), b)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), b))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), c)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), c))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(a, y0), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(a, y0), y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(c, a)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(c, a))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(c, b)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(c, b))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(c, c)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(c, c))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(c, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(c, y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(c, y0), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(c, y0), y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(a, y0))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(a, y0)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(b, y0))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(b, y0)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, y0))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, y0)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a)))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a))))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b)))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b))))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c)))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c))))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1)))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1))))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1)))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1))))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1)))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1))))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1)))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1))))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1)))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1))))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, a))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, a)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, b))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, b)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, c))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, c)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1)))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1))))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(y1, a)))) -> c4(ENCARG(cons_f(a, cons_f(y1, a))))
   ENCARG(cons_f(a, cons_f(a, cons_f(y1, b)))) -> c4(ENCARG(cons_f(a, cons_f(y1, b))))
   ENCARG(cons_f(a, cons_f(a, cons_f(y1, c)))) -> c4(ENCARG(cons_f(a, cons_f(y1, c))))
   ENCARG(cons_f(a, cons_f(a, cons_f(y1, cons_f(y2, y3))))) -> c4(ENCARG(cons_f(a, cons_f(y1, cons_f(y2, y3)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y1, y2), y3)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y1, y2), y3))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(a, y0))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(a, y0)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, y0))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, y0)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(c, y0))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(c, y0)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, a)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, a))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, b)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, b))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, c)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, c))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(y0, cons_f(a, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(a, y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(y0, cons_f(b, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(b, y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(a, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(y0, y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(y0, y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(c, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(c, cons_f(y0, y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(y0, a), y1))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, a), y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(y0, b), y1))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, b), y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(y0, c), y1))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, c), y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(b, y0), y1))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(b, y0), y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), a))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), a)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), b))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), b)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), c))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), c)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(a, y0), y1))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(a, y0), y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(c, a))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(c, a)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(c, b))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(c, b)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(c, c))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(c, c)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(y0, cons_f(c, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(c, y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(c, y0), y1))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(c, y0), y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, y0))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, y0)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(c, y0))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(c, y0)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, a)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, a))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, b)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, b))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, c)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, c))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(y0, cons_f(a, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(a, y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(y0, cons_f(b, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(b, y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(y0, y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(c, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(c, cons_f(y0, y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(y0, a), y1))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, a), y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(y0, b), y1))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, b), y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(y0, c), y1))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, c), y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(b, y0), y1))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(b, y0), y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), a))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), a)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), b))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), b)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), c))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), c)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(a, y0), y1))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(a, y0), y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(c, a))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(c, a)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(c, b))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(c, b)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(c, c))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(c, c)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(y0, cons_f(c, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(c, y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(c, y0), y1))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(c, y0), y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(a, y0)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, y0))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, y0)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, y0))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(c, y0)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, y0))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(c, a)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, a))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(c, b)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, b))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(c, c)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, c))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1))))))
S tuples:
   F(f(f(a, z0), z1), z2) -> c9(F(f(z0, z2), f(z1, z2)), F(z0, z2), F(z1, z2))
   F(f(b, z0), z1) -> c10
   F(c, z0) -> c11
K tuples:none
Defined Rule Symbols:   encArg_1, f_2

Defined Pair Symbols:   F_2, ENCARG_1, ENCODE_F_2

Compound Symbols:   c9_3, c10, c11, c4_2, c1_1, c4_3, c4_1


----------------------------------------

(119) CdtForwardInstantiationProof (BOTH BOUNDS(ID, ID))
Use forward instantiation to replace ENCARG(cons_f(a, cons_f(b, y0))) -> c4(ENCARG(cons_f(b, y0))) by 
   ENCARG(cons_f(a, cons_f(b, cons_f(y1, a)))) -> c4(ENCARG(cons_f(b, cons_f(y1, a))))
   ENCARG(cons_f(a, cons_f(b, cons_f(y1, b)))) -> c4(ENCARG(cons_f(b, cons_f(y1, b))))
   ENCARG(cons_f(a, cons_f(b, cons_f(y1, c)))) -> c4(ENCARG(cons_f(b, cons_f(y1, c))))
   ENCARG(cons_f(a, cons_f(b, cons_f(y1, cons_f(y2, y3))))) -> c4(ENCARG(cons_f(b, cons_f(y1, cons_f(y2, y3)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, y1)))) -> c4(ENCARG(cons_f(b, cons_f(a, y1))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, y1)))) -> c4(ENCARG(cons_f(b, cons_f(b, y1))))
   ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y1, y2), y3)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y1, y2), y3))))
   ENCARG(cons_f(a, cons_f(b, cons_f(c, y1)))) -> c4(ENCARG(cons_f(b, cons_f(c, y1))))
   ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, a))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(y1, a)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, b))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(y1, b)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, c))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(y1, c)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(a, y1))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(a, y1)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(b, y1))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(b, y1)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3))))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, y1)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(y0, y1)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(c, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(b, cons_f(c, cons_f(y0, y1)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, a), y1)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, a), y1))))
   ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, b), y1)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, b), y1))))
   ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, c), y1)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, c), y1))))
   ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))
   ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(b, y0), y1)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(b, y0), y1))))
   ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3))))
   ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), a)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, y1), a))))
   ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), b)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, y1), b))))
   ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), c)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, y1), c))))
   ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(a, y0), y1)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(a, y0), y1))))
   ENCARG(cons_f(a, cons_f(b, cons_f(c, a)))) -> c4(ENCARG(cons_f(b, cons_f(c, a))))
   ENCARG(cons_f(a, cons_f(b, cons_f(c, b)))) -> c4(ENCARG(cons_f(b, cons_f(c, b))))
   ENCARG(cons_f(a, cons_f(b, cons_f(c, c)))) -> c4(ENCARG(cons_f(b, cons_f(c, c))))
   ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(c, y1))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(c, y1)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(c, y0), y1)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(c, y0), y1))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, y0))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, y0)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, y0))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, y0)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, y0))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(c, y0)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, a))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(c, a)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, b))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(c, b)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, c))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(c, c)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(b, y0))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(b, y0)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(c, y0))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(c, y0)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(y0, cons_f(y1, a)))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(y1, a))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(y0, cons_f(y1, b)))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(y1, b))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(y0, cons_f(y1, c)))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(y1, c))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(y0, cons_f(a, y1)))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(a, y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(y0, cons_f(b, y1)))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(b, y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(b, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(b, cons_f(y0, y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(c, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(c, cons_f(y0, y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(cons_f(y0, a), y1))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, a), y1)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(cons_f(y0, b), y1))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, b), y1)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(cons_f(y0, c), y1))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, c), y1)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(cons_f(b, y0), y1))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(b, y0), y1)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(cons_f(y0, y1), a))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, y1), a)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(cons_f(y0, y1), b))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, y1), b)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(cons_f(y0, y1), c))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, y1), c)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(cons_f(a, y0), y1))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(a, y0), y1)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(c, a))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(c, a)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(c, b))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(c, b)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(c, c))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(c, c)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(y0, cons_f(c, y1)))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(c, y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(cons_f(c, y0), y1))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(c, y0), y1)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(a, y0)))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(a, y0))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(b, y0)))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(b, y0))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(c, y0)))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(c, y0))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a))))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b))))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c))))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1))))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1))))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1)))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1)))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1)))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1)))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a)))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b)))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c)))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1)))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(c, a)))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(c, a))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(c, b)))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(c, b))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(c, c)))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(c, c))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1))))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1)))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(a, y0)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(a, y0))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(b, y0)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(b, y0))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(c, y0)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(c, y0))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, a))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, a)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, b))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, b)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, c))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, c)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(a, y1))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(a, y1)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(b, y1))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(b, y1)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(a, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(a, cons_f(y0, y1)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(b, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(b, cons_f(y0, y1)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(c, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(c, cons_f(y0, y1)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, a), y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, a), y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, b), y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, b), y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, c), y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, c), y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(b, y0), y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(b, y0), y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), a)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), a))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), b)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), b))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), c)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), c))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(a, y0), y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(a, y0), y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(c, a)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(c, a))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(c, b)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(c, b))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(c, c)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(c, c))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(c, y1))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(c, y1)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(c, y0), y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(c, y0), y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(b, y0)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(b, y0))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(c, y0)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(c, y0))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, a))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, a)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, b))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, b)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, c))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, c)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(a, y1))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(a, y1)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(b, y1))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(b, y1)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, y1)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(b, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(b, cons_f(y0, y1)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(c, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(c, cons_f(y0, y1)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, a), y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, a), y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, b), y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, b), y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, c), y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, c), y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(b, y0), y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(b, y0), y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), a)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), a))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), b)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), b))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), c)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), c))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(a, y0), y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(a, y0), y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(c, a)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(c, a))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(c, b)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(c, b))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(c, c)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(c, c))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(c, y1))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(c, y1)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(c, y0), y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(c, y0), y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(a, y0))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(a, y0)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(b, y0))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(b, y0)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, y0))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, y0)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a)))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a))))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b)))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b))))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c)))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c))))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1)))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1))))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1)))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1))))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1)))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1))))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1)))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1))))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1)))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1))))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, a))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, a)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, b))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, b)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, c))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, c)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1)))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1))))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1)))))))

----------------------------------------

(120)
Obligation:
Complexity Dependency Tuples Problem

Rules:
   encArg(a) -> a
   encArg(b) -> b
   encArg(c) -> c
   encArg(cons_f(z0, z1)) -> f(encArg(z0), encArg(z1))
   f(f(f(a, z0), z1), z2) -> f(f(z0, z2), f(z1, z2))
   f(f(b, z0), z1) -> z0
   f(c, z0) -> z0
Tuples:
   F(f(f(a, z0), z1), z2) -> c9(F(f(z0, z2), f(z1, z2)), F(z0, z2), F(z1, z2))
   F(f(b, z0), z1) -> c10
   F(c, z0) -> c11
   ENCARG(cons_f(c, x1)) -> c4(F(c, encArg(x1)), ENCARG(x1))
   ENCODE_F(c, x1) -> c1(F(c, encArg(x1)))
   ENCARG(cons_f(x0, cons_f(x1, a))) -> c4(F(encArg(x0), f(encArg(x1), a)), ENCARG(x0), ENCARG(cons_f(x1, a)))
   ENCARG(cons_f(x0, cons_f(x1, b))) -> c4(F(encArg(x0), f(encArg(x1), b)), ENCARG(x0), ENCARG(cons_f(x1, b)))
   ENCARG(cons_f(x0, cons_f(x1, c))) -> c4(F(encArg(x0), f(encArg(x1), c)), ENCARG(x0), ENCARG(cons_f(x1, c)))
   ENCARG(cons_f(x0, cons_f(x1, cons_f(z0, z1)))) -> c4(F(encArg(x0), f(encArg(x1), f(encArg(z0), encArg(z1)))), ENCARG(x0), ENCARG(cons_f(x1, cons_f(z0, z1))))
   ENCARG(cons_f(x0, cons_f(a, x2))) -> c4(F(encArg(x0), f(a, encArg(x2))), ENCARG(x0), ENCARG(cons_f(a, x2)))
   ENCARG(cons_f(x0, cons_f(b, x2))) -> c4(F(encArg(x0), f(b, encArg(x2))), ENCARG(x0), ENCARG(cons_f(b, x2)))
   ENCARG(cons_f(x0, cons_f(cons_f(z0, z1), x2))) -> c4(F(encArg(x0), f(f(encArg(z0), encArg(z1)), encArg(x2))), ENCARG(x0), ENCARG(cons_f(cons_f(z0, z1), x2)))
   ENCARG(cons_f(cons_f(z0, z1), cons_f(x1, x2))) -> c4(F(f(encArg(z0), encArg(z1)), f(encArg(x1), encArg(x2))), ENCARG(cons_f(z0, z1)), ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(c, cons_f(x1, x2))) -> c4(F(c, f(encArg(x1), encArg(x2))), ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(cons_f(x0, a), x2)) -> c4(F(f(encArg(x0), a), encArg(x2)), ENCARG(cons_f(x0, a)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, b), x2)) -> c4(F(f(encArg(x0), b), encArg(x2)), ENCARG(cons_f(x0, b)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, c), x2)) -> c4(F(f(encArg(x0), c), encArg(x2)), ENCARG(cons_f(x0, c)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, cons_f(z0, z1)), x2)) -> c4(F(f(encArg(x0), f(encArg(z0), encArg(z1))), encArg(x2)), ENCARG(cons_f(x0, cons_f(z0, z1))), ENCARG(x2))
   ENCARG(cons_f(cons_f(b, x1), x2)) -> c4(F(f(b, encArg(x1)), encArg(x2)), ENCARG(cons_f(b, x1)), ENCARG(x2))
   ENCARG(cons_f(cons_f(cons_f(z0, z1), x1), x2)) -> c4(F(f(f(encArg(z0), encArg(z1)), encArg(x1)), encArg(x2)), ENCARG(cons_f(cons_f(z0, z1), x1)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, x1), a)) -> c4(F(f(encArg(x0), encArg(x1)), a), ENCARG(cons_f(x0, x1)))
   ENCARG(cons_f(cons_f(x0, x1), b)) -> c4(F(f(encArg(x0), encArg(x1)), b), ENCARG(cons_f(x0, x1)))
   ENCARG(cons_f(cons_f(x0, x1), c)) -> c4(F(f(encArg(x0), encArg(x1)), c), ENCARG(cons_f(x0, x1)))
   ENCARG(cons_f(c, a)) -> c4(F(c, a))
   ENCARG(cons_f(c, b)) -> c4(F(c, b))
   ENCARG(cons_f(c, c)) -> c4(F(c, c))
   ENCODE_F(cons_f(z0, z1), a) -> c1(F(f(encArg(z0), encArg(z1)), a))
   ENCODE_F(cons_f(z0, z1), b) -> c1(F(f(encArg(z0), encArg(z1)), b))
   ENCODE_F(cons_f(z0, z1), c) -> c1(F(f(encArg(z0), encArg(z1)), c))
   ENCODE_F(x0, cons_f(x1, a)) -> c1(F(encArg(x0), f(encArg(x1), a)))
   ENCODE_F(x0, cons_f(x1, b)) -> c1(F(encArg(x0), f(encArg(x1), b)))
   ENCODE_F(x0, cons_f(x1, c)) -> c1(F(encArg(x0), f(encArg(x1), c)))
   ENCODE_F(x0, cons_f(x1, cons_f(z0, z1))) -> c1(F(encArg(x0), f(encArg(x1), f(encArg(z0), encArg(z1)))))
   ENCODE_F(x0, cons_f(a, x2)) -> c1(F(encArg(x0), f(a, encArg(x2))))
   ENCODE_F(x0, cons_f(b, x2)) -> c1(F(encArg(x0), f(b, encArg(x2))))
   ENCODE_F(x0, cons_f(cons_f(z0, z1), x2)) -> c1(F(encArg(x0), f(f(encArg(z0), encArg(z1)), encArg(x2))))
   ENCODE_F(c, cons_f(x1, x2)) -> c1(F(c, f(encArg(x1), encArg(x2))))
   ENCODE_F(cons_f(z0, z1), cons_f(x1, x2)) -> c1(F(f(encArg(z0), encArg(z1)), f(encArg(x1), encArg(x2))))
   ENCODE_F(cons_f(x0, a), x2) -> c1(F(f(encArg(x0), a), encArg(x2)))
   ENCODE_F(cons_f(x0, b), x2) -> c1(F(f(encArg(x0), b), encArg(x2)))
   ENCODE_F(cons_f(x0, c), x2) -> c1(F(f(encArg(x0), c), encArg(x2)))
   ENCODE_F(cons_f(x0, cons_f(z0, z1)), x2) -> c1(F(f(encArg(x0), f(encArg(z0), encArg(z1))), encArg(x2)))
   ENCODE_F(cons_f(b, x1), x2) -> c1(F(f(b, encArg(x1)), encArg(x2)))
   ENCODE_F(cons_f(cons_f(z0, z1), x1), x2) -> c1(F(f(f(encArg(z0), encArg(z1)), encArg(x1)), encArg(x2)))
   ENCARG(cons_f(z0, cons_f(c, z1))) -> c4(F(encArg(z0), encArg(z1)), ENCARG(z0), ENCARG(cons_f(c, z1)))
   ENCARG(cons_f(cons_f(c, z0), z1)) -> c4(F(encArg(z0), encArg(z1)), ENCARG(cons_f(c, z0)), ENCARG(z1))
   ENCODE_F(z0, cons_f(c, z1)) -> c1(F(encArg(z0), encArg(z1)))
   ENCODE_F(cons_f(c, z0), z1) -> c1(F(encArg(z0), encArg(z1)))
   ENCARG(cons_f(a, cons_f(c, y0))) -> c4(ENCARG(cons_f(c, y0)))
   ENCARG(cons_f(a, cons_f(y0, cons_f(y1, a)))) -> c4(ENCARG(cons_f(y0, cons_f(y1, a))))
   ENCARG(cons_f(a, cons_f(y0, cons_f(y1, b)))) -> c4(ENCARG(cons_f(y0, cons_f(y1, b))))
   ENCARG(cons_f(a, cons_f(y0, cons_f(y1, c)))) -> c4(ENCARG(cons_f(y0, cons_f(y1, c))))
   ENCARG(cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))) -> c4(ENCARG(cons_f(y0, cons_f(y1, cons_f(y2, y3)))))
   ENCARG(cons_f(a, cons_f(y0, cons_f(a, y1)))) -> c4(ENCARG(cons_f(y0, cons_f(a, y1))))
   ENCARG(cons_f(a, cons_f(y0, cons_f(b, y1)))) -> c4(ENCARG(cons_f(y0, cons_f(b, y1))))
   ENCARG(cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))) -> c4(ENCARG(cons_f(y0, cons_f(cons_f(y1, y2), y3))))
   ENCARG(cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))) -> c4(ENCARG(cons_f(cons_f(y0, y1), cons_f(y2, y3))))
   ENCARG(cons_f(a, cons_f(a, cons_f(y0, y1)))) -> c4(ENCARG(cons_f(a, cons_f(y0, y1))))
   ENCARG(cons_f(a, cons_f(b, cons_f(y0, y1)))) -> c4(ENCARG(cons_f(b, cons_f(y0, y1))))
   ENCARG(cons_f(a, cons_f(c, cons_f(y0, y1)))) -> c4(ENCARG(cons_f(c, cons_f(y0, y1))))
   ENCARG(cons_f(a, cons_f(cons_f(y0, a), y1))) -> c4(ENCARG(cons_f(cons_f(y0, a), y1)))
   ENCARG(cons_f(a, cons_f(cons_f(y0, b), y1))) -> c4(ENCARG(cons_f(cons_f(y0, b), y1)))
   ENCARG(cons_f(a, cons_f(cons_f(y0, c), y1))) -> c4(ENCARG(cons_f(cons_f(y0, c), y1)))
   ENCARG(cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))) -> c4(ENCARG(cons_f(cons_f(y0, cons_f(y1, y2)), y3)))
   ENCARG(cons_f(a, cons_f(cons_f(b, y0), y1))) -> c4(ENCARG(cons_f(cons_f(b, y0), y1)))
   ENCARG(cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))) -> c4(ENCARG(cons_f(cons_f(cons_f(y0, y1), y2), y3)))
   ENCARG(cons_f(a, cons_f(cons_f(y0, y1), a))) -> c4(ENCARG(cons_f(cons_f(y0, y1), a)))
   ENCARG(cons_f(a, cons_f(cons_f(y0, y1), b))) -> c4(ENCARG(cons_f(cons_f(y0, y1), b)))
   ENCARG(cons_f(a, cons_f(cons_f(y0, y1), c))) -> c4(ENCARG(cons_f(cons_f(y0, y1), c)))
   ENCARG(cons_f(a, cons_f(cons_f(a, y0), y1))) -> c4(ENCARG(cons_f(cons_f(a, y0), y1)))
   ENCARG(cons_f(a, cons_f(c, a))) -> c4(ENCARG(cons_f(c, a)))
   ENCARG(cons_f(a, cons_f(c, b))) -> c4(ENCARG(cons_f(c, b)))
   ENCARG(cons_f(a, cons_f(c, c))) -> c4(ENCARG(cons_f(c, c)))
   ENCARG(cons_f(a, cons_f(y0, cons_f(c, y1)))) -> c4(ENCARG(cons_f(y0, cons_f(c, y1))))
   ENCARG(cons_f(a, cons_f(cons_f(c, y0), y1))) -> c4(ENCARG(cons_f(cons_f(c, y0), y1)))
   ENCARG(cons_f(b, cons_f(b, y0))) -> c4(ENCARG(cons_f(b, y0)))
   ENCARG(cons_f(b, cons_f(c, y0))) -> c4(ENCARG(cons_f(c, y0)))
   ENCARG(cons_f(b, cons_f(y0, cons_f(y1, a)))) -> c4(ENCARG(cons_f(y0, cons_f(y1, a))))
   ENCARG(cons_f(b, cons_f(y0, cons_f(y1, b)))) -> c4(ENCARG(cons_f(y0, cons_f(y1, b))))
   ENCARG(cons_f(b, cons_f(y0, cons_f(y1, c)))) -> c4(ENCARG(cons_f(y0, cons_f(y1, c))))
   ENCARG(cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3))))) -> c4(ENCARG(cons_f(y0, cons_f(y1, cons_f(y2, y3)))))
   ENCARG(cons_f(b, cons_f(y0, cons_f(a, y1)))) -> c4(ENCARG(cons_f(y0, cons_f(a, y1))))
   ENCARG(cons_f(b, cons_f(y0, cons_f(b, y1)))) -> c4(ENCARG(cons_f(y0, cons_f(b, y1))))
   ENCARG(cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3)))) -> c4(ENCARG(cons_f(y0, cons_f(cons_f(y1, y2), y3))))
   ENCARG(cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3)))) -> c4(ENCARG(cons_f(cons_f(y0, y1), cons_f(y2, y3))))
   ENCARG(cons_f(b, cons_f(a, cons_f(y0, y1)))) -> c4(ENCARG(cons_f(a, cons_f(y0, y1))))
   ENCARG(cons_f(b, cons_f(b, cons_f(y0, y1)))) -> c4(ENCARG(cons_f(b, cons_f(y0, y1))))
   ENCARG(cons_f(b, cons_f(c, cons_f(y0, y1)))) -> c4(ENCARG(cons_f(c, cons_f(y0, y1))))
   ENCARG(cons_f(b, cons_f(cons_f(y0, a), y1))) -> c4(ENCARG(cons_f(cons_f(y0, a), y1)))
   ENCARG(cons_f(b, cons_f(cons_f(y0, b), y1))) -> c4(ENCARG(cons_f(cons_f(y0, b), y1)))
   ENCARG(cons_f(b, cons_f(cons_f(y0, c), y1))) -> c4(ENCARG(cons_f(cons_f(y0, c), y1)))
   ENCARG(cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3))) -> c4(ENCARG(cons_f(cons_f(y0, cons_f(y1, y2)), y3)))
   ENCARG(cons_f(b, cons_f(cons_f(b, y0), y1))) -> c4(ENCARG(cons_f(cons_f(b, y0), y1)))
   ENCARG(cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3))) -> c4(ENCARG(cons_f(cons_f(cons_f(y0, y1), y2), y3)))
   ENCARG(cons_f(b, cons_f(cons_f(y0, y1), a))) -> c4(ENCARG(cons_f(cons_f(y0, y1), a)))
   ENCARG(cons_f(b, cons_f(cons_f(y0, y1), b))) -> c4(ENCARG(cons_f(cons_f(y0, y1), b)))
   ENCARG(cons_f(b, cons_f(cons_f(y0, y1), c))) -> c4(ENCARG(cons_f(cons_f(y0, y1), c)))
   ENCARG(cons_f(b, cons_f(cons_f(a, y0), y1))) -> c4(ENCARG(cons_f(cons_f(a, y0), y1)))
   ENCARG(cons_f(b, cons_f(c, a))) -> c4(ENCARG(cons_f(c, a)))
   ENCARG(cons_f(b, cons_f(c, b))) -> c4(ENCARG(cons_f(c, b)))
   ENCARG(cons_f(b, cons_f(c, c))) -> c4(ENCARG(cons_f(c, c)))
   ENCARG(cons_f(b, cons_f(y0, cons_f(c, y1)))) -> c4(ENCARG(cons_f(y0, cons_f(c, y1))))
   ENCARG(cons_f(b, cons_f(cons_f(c, y0), y1))) -> c4(ENCARG(cons_f(cons_f(c, y0), y1)))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, y0)))) -> c4(ENCARG(cons_f(a, cons_f(a, y0))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, y0)))) -> c4(ENCARG(cons_f(a, cons_f(b, y0))))
   ENCARG(cons_f(b, cons_f(a, cons_f(c, y0)))) -> c4(ENCARG(cons_f(a, cons_f(c, y0))))
   ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(y1, a)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(y1, b)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(y1, c)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(a, y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(b, y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(a, cons_f(c, cons_f(y0, y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, a), y1))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, b), y1))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, c), y1))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(b, y0), y1))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, y1), a))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, y1), b))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, y1), c))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(a, y0), y1))))
   ENCARG(cons_f(b, cons_f(a, cons_f(c, a)))) -> c4(ENCARG(cons_f(a, cons_f(c, a))))
   ENCARG(cons_f(b, cons_f(a, cons_f(c, b)))) -> c4(ENCARG(cons_f(a, cons_f(c, b))))
   ENCARG(cons_f(b, cons_f(a, cons_f(c, c)))) -> c4(ENCARG(cons_f(a, cons_f(c, c))))
   ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(c, y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(c, y0), y1))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, y0)))) -> c4(ENCARG(cons_f(a, cons_f(a, y0))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, y0)))) -> c4(ENCARG(cons_f(a, cons_f(b, y0))))
   ENCARG(cons_f(a, cons_f(a, cons_f(c, y0)))) -> c4(ENCARG(cons_f(a, cons_f(c, y0))))
   ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, a))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(y1, a)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, b))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(y1, b)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, c))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(y1, c)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(a, y1))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(a, y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(b, y1))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(b, y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(c, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(a, cons_f(c, cons_f(y0, y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, a), y1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, a), y1))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, b), y1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, b), y1))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, c), y1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, c), y1))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(b, y0), y1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(b, y0), y1))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), a)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, y1), a))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), b)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, y1), b))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), c)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, y1), c))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(a, y0), y1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(a, y0), y1))))
   ENCARG(cons_f(a, cons_f(a, cons_f(c, a)))) -> c4(ENCARG(cons_f(a, cons_f(c, a))))
   ENCARG(cons_f(a, cons_f(a, cons_f(c, b)))) -> c4(ENCARG(cons_f(a, cons_f(c, b))))
   ENCARG(cons_f(a, cons_f(a, cons_f(c, c)))) -> c4(ENCARG(cons_f(a, cons_f(c, c))))
   ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(c, y1))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(c, y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(c, y0), y1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(c, y0), y1))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, y0)))) -> c4(ENCARG(cons_f(b, cons_f(b, y0))))
   ENCARG(cons_f(a, cons_f(b, cons_f(c, y0)))) -> c4(ENCARG(cons_f(b, cons_f(c, y0))))
   ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, a))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(y1, a)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, b))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(y1, b)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, c))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(y1, c)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(a, y1))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(a, y1)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(b, y1))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(b, y1)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3))))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, y1)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(y0, y1)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(c, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(b, cons_f(c, cons_f(y0, y1)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, a), y1)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, a), y1))))
   ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, b), y1)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, b), y1))))
   ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, c), y1)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, c), y1))))
   ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))
   ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(b, y0), y1)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(b, y0), y1))))
   ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3))))
   ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), a)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, y1), a))))
   ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), b)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, y1), b))))
   ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), c)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, y1), c))))
   ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(a, y0), y1)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(a, y0), y1))))
   ENCARG(cons_f(a, cons_f(b, cons_f(c, a)))) -> c4(ENCARG(cons_f(b, cons_f(c, a))))
   ENCARG(cons_f(a, cons_f(b, cons_f(c, b)))) -> c4(ENCARG(cons_f(b, cons_f(c, b))))
   ENCARG(cons_f(a, cons_f(b, cons_f(c, c)))) -> c4(ENCARG(cons_f(b, cons_f(c, c))))
   ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(c, y1))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(c, y1)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(c, y0), y1)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(c, y0), y1))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, y0))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, y0)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, y0))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, y0)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, y0))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(c, y0)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, a))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(c, a)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, b))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(c, b)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, c))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(c, c)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(b, y0)))) -> c4(ENCARG(cons_f(b, cons_f(b, y0))))
   ENCARG(cons_f(b, cons_f(b, cons_f(c, y0)))) -> c4(ENCARG(cons_f(b, cons_f(c, y0))))
   ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(y1, a))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(y1, a)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(y1, b))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(y1, b)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(y1, c))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(y1, c)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))
   ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(a, y1))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(a, y1)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(b, y1))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(b, y1)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3))))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, y1)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(b, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(y0, y1)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(c, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(b, cons_f(c, cons_f(y0, y1)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, a), y1)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, a), y1))))
   ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, b), y1)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, b), y1))))
   ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, c), y1)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, c), y1))))
   ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))
   ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(b, y0), y1)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(b, y0), y1))))
   ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3))))
   ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, y1), a)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, y1), a))))
   ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, y1), b)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, y1), b))))
   ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, y1), c)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, y1), c))))
   ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(a, y0), y1)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(a, y0), y1))))
   ENCARG(cons_f(b, cons_f(b, cons_f(c, a)))) -> c4(ENCARG(cons_f(b, cons_f(c, a))))
   ENCARG(cons_f(b, cons_f(b, cons_f(c, b)))) -> c4(ENCARG(cons_f(b, cons_f(c, b))))
   ENCARG(cons_f(b, cons_f(b, cons_f(c, c)))) -> c4(ENCARG(cons_f(b, cons_f(c, c))))
   ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(c, y1))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(c, y1)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(c, y0), y1)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(c, y0), y1))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(a, y0))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, y0)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(b, y0))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, y0)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(c, y0))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(c, y0)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a))))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b))))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c))))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1))))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1))))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1))))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1))))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1))))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(c, a))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(c, a)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(c, b))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(c, b)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(c, c))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(c, c)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1))))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(a, y0))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(a, y0)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(b, y0))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, y0)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(c, y0))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(c, y0)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, a)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, a))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, b)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, b))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, c)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, c))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(a, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(a, y1))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(b, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(b, y1))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(a, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(y0, y1))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(b, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(y0, y1))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(c, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(c, cons_f(y0, y1))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, a), y1))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, a), y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, b), y1))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, b), y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, c), y1))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, c), y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(b, y0), y1))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(b, y0), y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), a))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), a)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), b))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), b)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), c))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), c)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(a, y0), y1))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(a, y0), y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(c, a))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(c, a)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(c, b))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(c, b)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(c, c))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(c, c)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(c, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(c, y1))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(c, y0), y1))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(c, y0), y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(b, y0))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, y0)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(c, y0))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(c, y0)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, a)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, a))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, b)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, b))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, c)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, c))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(a, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(a, y1))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(b, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(b, y1))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, y1))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(b, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(y0, y1))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(c, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(c, cons_f(y0, y1))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, a), y1))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, a), y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, b), y1))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, b), y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, c), y1))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, c), y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(b, y0), y1))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(b, y0), y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), a))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), a)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), b))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), b)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), c))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), c)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(a, y0), y1))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(a, y0), y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(c, a))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(c, a)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(c, b))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(c, b)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(c, c))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(c, c)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(c, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(c, y1))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(c, y0), y1))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(c, y0), y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(a, y0)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, y0))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(b, y0)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, y0))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, y0)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, y0))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a)))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b)))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c)))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1)))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1)))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1)))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1)))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1)))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, a)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, a))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, b)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, b))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, c)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, c))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1)))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(c, y0))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(c, y0)))
   ENCARG(cons_f(cons_f(a, cons_f(y1, a)), z1)) -> c4(ENCARG(cons_f(a, cons_f(y1, a))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(y0, cons_f(y1, a)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(y0, cons_f(y1, a))))
   ENCARG(cons_f(cons_f(a, cons_f(y1, b)), z1)) -> c4(ENCARG(cons_f(a, cons_f(y1, b))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(y0, cons_f(y1, b)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(y0, cons_f(y1, b))))
   ENCARG(cons_f(cons_f(a, cons_f(y1, c)), z1)) -> c4(ENCARG(cons_f(a, cons_f(y1, c))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(y0, cons_f(y1, c)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(y0, cons_f(y1, c))))
   ENCARG(cons_f(cons_f(a, cons_f(y1, cons_f(y2, y3))), z1)) -> c4(ENCARG(cons_f(a, cons_f(y1, cons_f(y2, y3)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(y0, cons_f(y1, cons_f(y2, y3))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(y0, cons_f(y1, cons_f(y2, y3)))))
   ENCARG(cons_f(cons_f(a, cons_f(a, y1)), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, y1))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(y0, cons_f(a, y1)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(y0, cons_f(a, y1))))
   ENCARG(cons_f(cons_f(a, cons_f(b, y1)), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, y1))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(y0, cons_f(b, y1)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(y0, cons_f(b, y1))))
   ENCARG(cons_f(cons_f(a, cons_f(cons_f(y1, y2), y3)), z1)) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y1, y2), y3))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(y0, cons_f(cons_f(y1, y2), y3)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(y0, cons_f(cons_f(y1, y2), y3))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(cons_f(y0, y1), cons_f(y2, y3)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(cons_f(y0, y1), cons_f(y2, y3))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(c, cons_f(y0, y1)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(c, cons_f(y0, y1))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(cons_f(y0, a), y1))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(cons_f(y0, a), y1)))
   ENCARG(cons_f(cons_f(a, z0), cons_f(cons_f(y0, b), y1))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(cons_f(y0, b), y1)))
   ENCARG(cons_f(cons_f(a, z0), cons_f(cons_f(y0, c), y1))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(cons_f(y0, c), y1)))
   ENCARG(cons_f(cons_f(a, z0), cons_f(cons_f(y0, cons_f(y1, y2)), y3))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(cons_f(y0, cons_f(y1, y2)), y3)))
   ENCARG(cons_f(cons_f(a, z0), cons_f(cons_f(b, y0), y1))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(cons_f(b, y0), y1)))
   ENCARG(cons_f(cons_f(a, z0), cons_f(cons_f(cons_f(y0, y1), y2), y3))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(cons_f(cons_f(y0, y1), y2), y3)))
   ENCARG(cons_f(cons_f(a, z0), cons_f(cons_f(y0, y1), a))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(cons_f(y0, y1), a)))
   ENCARG(cons_f(cons_f(a, z0), cons_f(cons_f(y0, y1), b))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(cons_f(y0, y1), b)))
   ENCARG(cons_f(cons_f(a, z0), cons_f(cons_f(y0, y1), c))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(cons_f(y0, y1), c)))
   ENCARG(cons_f(cons_f(a, z0), cons_f(cons_f(a, y0), y1))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(cons_f(a, y0), y1)))
   ENCARG(cons_f(cons_f(a, z0), cons_f(c, a))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(c, a)))
   ENCARG(cons_f(cons_f(a, z0), cons_f(c, b))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(c, b)))
   ENCARG(cons_f(cons_f(a, z0), cons_f(c, c))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(c, c)))
   ENCARG(cons_f(cons_f(a, cons_f(c, y1)), z1)) -> c4(ENCARG(cons_f(a, cons_f(c, y1))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(y0, cons_f(c, y1)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(y0, cons_f(c, y1))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(cons_f(c, y0), y1))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(cons_f(c, y0), y1)))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, y0)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, y0))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, y0)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, y0))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(c, y0)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(c, y0))))
   ENCARG(cons_f(cons_f(a, cons_f(y0, cons_f(y1, a))), z1)) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(y1, a)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(y0, cons_f(y1, a))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(y0, cons_f(y1, a)))))
   ENCARG(cons_f(cons_f(a, cons_f(y0, cons_f(y1, b))), z1)) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(y1, b)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(y0, cons_f(y1, b))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(y0, cons_f(y1, b)))))
   ENCARG(cons_f(cons_f(a, cons_f(y0, cons_f(y1, c))), z1)) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(y1, c)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(y0, cons_f(y1, c))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(y0, cons_f(y1, c)))))
   ENCARG(cons_f(cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))
   ENCARG(cons_f(cons_f(a, cons_f(y0, cons_f(a, y1))), z1)) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(a, y1)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(y0, cons_f(a, y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(y0, cons_f(a, y1)))))
   ENCARG(cons_f(cons_f(a, cons_f(y0, cons_f(b, y1))), z1)) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(b, y1)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(y0, cons_f(b, y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(y0, cons_f(b, y1)))))
   ENCARG(cons_f(cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))), z1)) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))
   ENCARG(cons_f(cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))), z1)) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(y0, y1))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, y1)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(y0, y1)))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(y0, y1))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, y1)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(y0, y1)))))
   ENCARG(cons_f(cons_f(a, cons_f(c, cons_f(y0, y1))), z1)) -> c4(ENCARG(cons_f(a, cons_f(c, cons_f(y0, y1)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(c, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(c, cons_f(y0, y1)))))
   ENCARG(cons_f(cons_f(a, cons_f(cons_f(y0, a), y1)), z1)) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, a), y1))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(cons_f(y0, a), y1)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(cons_f(y0, a), y1))))
   ENCARG(cons_f(cons_f(a, cons_f(cons_f(y0, b), y1)), z1)) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, b), y1))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(cons_f(y0, b), y1)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(cons_f(y0, b), y1))))
   ENCARG(cons_f(cons_f(a, cons_f(cons_f(y0, c), y1)), z1)) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, c), y1))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(cons_f(y0, c), y1)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(cons_f(y0, c), y1))))
   ENCARG(cons_f(cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)), z1)) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))
   ENCARG(cons_f(cons_f(a, cons_f(cons_f(b, y0), y1)), z1)) -> c4(ENCARG(cons_f(a, cons_f(cons_f(b, y0), y1))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(cons_f(b, y0), y1)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(cons_f(b, y0), y1))))
   ENCARG(cons_f(cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)), z1)) -> c4(ENCARG(cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))
   ENCARG(cons_f(cons_f(a, cons_f(cons_f(y0, y1), a)), z1)) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, y1), a))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(cons_f(y0, y1), a)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(cons_f(y0, y1), a))))
   ENCARG(cons_f(cons_f(a, cons_f(cons_f(y0, y1), b)), z1)) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, y1), b))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(cons_f(y0, y1), b)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(cons_f(y0, y1), b))))
   ENCARG(cons_f(cons_f(a, cons_f(cons_f(y0, y1), c)), z1)) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, y1), c))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(cons_f(y0, y1), c)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(cons_f(y0, y1), c))))
   ENCARG(cons_f(cons_f(a, cons_f(cons_f(a, y0), y1)), z1)) -> c4(ENCARG(cons_f(a, cons_f(cons_f(a, y0), y1))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(cons_f(a, y0), y1)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(cons_f(a, y0), y1))))
   ENCARG(cons_f(cons_f(a, cons_f(c, a)), z1)) -> c4(ENCARG(cons_f(a, cons_f(c, a))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(c, a)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(c, a))))
   ENCARG(cons_f(cons_f(a, cons_f(c, b)), z1)) -> c4(ENCARG(cons_f(a, cons_f(c, b))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(c, b)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(c, b))))
   ENCARG(cons_f(cons_f(a, cons_f(c, c)), z1)) -> c4(ENCARG(cons_f(a, cons_f(c, c))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(c, c)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(c, c))))
   ENCARG(cons_f(cons_f(a, cons_f(y0, cons_f(c, y1))), z1)) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(c, y1)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(y0, cons_f(c, y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(y0, cons_f(c, y1)))))
   ENCARG(cons_f(cons_f(a, cons_f(cons_f(c, y0), y1)), z1)) -> c4(ENCARG(cons_f(a, cons_f(cons_f(c, y0), y1))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(cons_f(c, y0), y1)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(cons_f(c, y0), y1))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, y0)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, y0))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(c, y0)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(c, y0))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(y0, cons_f(y1, a))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(y0, cons_f(y1, a)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(y0, cons_f(y1, b))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(y0, cons_f(y1, b)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(y0, cons_f(y1, c))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(y0, cons_f(y1, c)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(y0, cons_f(a, y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(y0, cons_f(a, y1)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(y0, cons_f(b, y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(y0, cons_f(b, y1)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(y0, y1)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(y0, y1)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(c, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(c, cons_f(y0, y1)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(cons_f(y0, a), y1)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(cons_f(y0, a), y1))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(cons_f(y0, b), y1)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(cons_f(y0, b), y1))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(cons_f(y0, c), y1)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(cons_f(y0, c), y1))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(cons_f(b, y0), y1)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(cons_f(b, y0), y1))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(cons_f(y0, y1), a)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(cons_f(y0, y1), a))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(cons_f(y0, y1), b)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(cons_f(y0, y1), b))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(cons_f(y0, y1), c)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(cons_f(y0, y1), c))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(cons_f(a, y0), y1)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(cons_f(a, y0), y1))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(c, a)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(c, a))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(c, b)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(c, b))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(c, c)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(c, c))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(y0, cons_f(c, y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(y0, cons_f(c, y1)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(cons_f(c, y0), y1)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(cons_f(c, y0), y1))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, y0))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, y0)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, y0))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, y0)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(c, y0))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(c, y0)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(c, a))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(c, a)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(c, b))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(c, b)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(c, c))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(c, c)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1)))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(a, y0))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(a, y0)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(a, y0))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(a, y0)))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(b, y0))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, y0)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(b, y0))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(b, y0)))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(c, y0))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(c, y0)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(c, y0))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(c, y0)))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, a)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, a))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, a)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, a))))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, b)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, b))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, b)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, b))))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, c)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, c))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, c)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, c))))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(y0, cons_f(a, y1)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(a, y1))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(y0, cons_f(a, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(a, y1))))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(y0, cons_f(b, y1)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(b, y1))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(y0, cons_f(b, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(b, y1))))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(a, cons_f(y0, y1)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(y0, y1))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(a, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(y0, y1))))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(b, cons_f(y0, y1)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(y0, y1))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(b, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(y0, y1))))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(c, cons_f(y0, y1)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(c, cons_f(y0, y1))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(c, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(c, cons_f(y0, y1))))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(cons_f(y0, a), y1))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, a), y1)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(cons_f(y0, a), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, a), y1)))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(cons_f(y0, b), y1))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, b), y1)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(cons_f(y0, b), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, b), y1)))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(cons_f(y0, c), y1))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, c), y1)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(cons_f(y0, c), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, c), y1)))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(cons_f(b, y0), y1))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(b, y0), y1)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(cons_f(b, y0), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(b, y0), y1)))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), a))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), a)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), a))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), a)))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), b))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), b)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), b))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), b)))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), c))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), c)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), c))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), c)))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(cons_f(a, y0), y1))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(a, y0), y1)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(cons_f(a, y0), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(a, y0), y1)))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(c, a))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(c, a)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(c, a))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(c, a)))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(c, b))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(c, b)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(c, b))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(c, b)))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(c, c))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(c, c)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(c, c))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(c, c)))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(y0, cons_f(c, y1)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(c, y1))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(y0, cons_f(c, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(c, y1))))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(cons_f(c, y0), y1))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(c, y0), y1)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(cons_f(c, y0), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(c, y0), y1)))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(b, y0))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, y0)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(b, y0))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(b, y0)))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(c, y0))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(c, y0)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(c, y0))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(c, y0)))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, a)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, a))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, a)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, a))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, b)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, b))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, b)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, b))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, c)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, c))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, c)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, c))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3))))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(y0, cons_f(a, y1)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(a, y1))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(y0, cons_f(a, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(a, y1))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(y0, cons_f(b, y1)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(b, y1))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(y0, cons_f(b, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(b, y1))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, y1)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, y1))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, y1))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(b, cons_f(y0, y1)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(y0, y1))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(b, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(y0, y1))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(c, cons_f(y0, y1)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(c, cons_f(y0, y1))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(c, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(c, cons_f(y0, y1))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(cons_f(y0, a), y1))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, a), y1)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(cons_f(y0, a), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, a), y1)))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(cons_f(y0, b), y1))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, b), y1)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(cons_f(y0, b), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, b), y1)))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(cons_f(y0, c), y1))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, c), y1)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(cons_f(y0, c), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, c), y1)))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(cons_f(b, y0), y1))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(b, y0), y1)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(cons_f(b, y0), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(b, y0), y1)))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), a))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), a)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), a))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), a)))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), b))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), b)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), b))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), b)))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), c))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), c)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), c))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), c)))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(cons_f(a, y0), y1))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(a, y0), y1)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(cons_f(a, y0), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(a, y0), y1)))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(c, a))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(c, a)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(c, a))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(c, a)))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(c, b))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(c, b)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(c, b))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(c, b)))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(c, c))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(c, c)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(c, c))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(c, c)))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(y0, cons_f(c, y1)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(c, y1))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(y0, cons_f(c, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(c, y1))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(cons_f(c, y0), y1))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(c, y0), y1)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(cons_f(c, y0), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(c, y0), y1)))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(a, y0)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, y0))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(a, y0)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, y0))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(b, y0)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, y0))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(b, y0)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, y0))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(c, y0)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, y0))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(c, y0)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, y0))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a))))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a)))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a)))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b))))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b)))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b)))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c))))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c)))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c)))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1))))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1)))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1)))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1))))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1)))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1)))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1))))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1)))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1)))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1))))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1)))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1)))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1))))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1)))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1)))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(c, a)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, a))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(c, a)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, a))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(c, b)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, b))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(c, b)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, b))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(c, c)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, c))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(c, c)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, c))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1))))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1)))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1)))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(b, y0))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(b, y0)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(c, y0))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(c, y0)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(y0, cons_f(y1, a)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(y1, a))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(y0, cons_f(y1, b)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(y1, b))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(y0, cons_f(y1, c)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(y1, c))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(y0, cons_f(a, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(a, y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(y0, cons_f(b, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(b, y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(b, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(b, cons_f(y0, y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(c, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(c, cons_f(y0, y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(cons_f(y0, a), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, a), y1)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(cons_f(y0, b), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, b), y1)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(cons_f(y0, c), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, c), y1)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(cons_f(b, y0), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(b, y0), y1)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(cons_f(y0, y1), a))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, y1), a)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(cons_f(y0, y1), b))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, y1), b)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(cons_f(y0, y1), c))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, y1), c)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(cons_f(a, y0), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(a, y0), y1)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(c, a))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(c, a)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(c, b))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(c, b)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(c, c))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(c, c)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(y0, cons_f(c, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(c, y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(cons_f(c, y0), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(c, y0), y1)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(a, y0)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(a, y0))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(b, y0)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(b, y0))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(c, y0)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(c, y0))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(c, a)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(c, a))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(c, b)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(c, b))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(c, c)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(c, c))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(a, y0)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(a, y0))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(b, y0)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(b, y0))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(c, y0)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(c, y0))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, a))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, a)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, b))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, b)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, c))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, c)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(a, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(a, y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(b, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(b, y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(a, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(a, cons_f(y0, y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(b, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(b, cons_f(y0, y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(c, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(c, cons_f(y0, y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, a), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, a), y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, b), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, b), y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, c), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, c), y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(b, y0), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(b, y0), y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), a)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), a))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), b)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), b))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), c)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), c))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(a, y0), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(a, y0), y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(c, a)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(c, a))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(c, b)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(c, b))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(c, c)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(c, c))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(c, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(c, y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(c, y0), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(c, y0), y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(b, y0)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(b, y0))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(c, y0)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(c, y0))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, a))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, a)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, b))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, b)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, c))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, c)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(a, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(a, y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(b, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(b, y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(b, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(b, cons_f(y0, y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(c, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(c, cons_f(y0, y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, a), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, a), y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, b), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, b), y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, c), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, c), y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(b, y0), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(b, y0), y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), a)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), a))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), b)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), b))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), c)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), c))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(a, y0), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(a, y0), y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(c, a)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(c, a))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(c, b)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(c, b))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(c, c)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(c, c))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(c, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(c, y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(c, y0), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(c, y0), y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(a, y0))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(a, y0)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(b, y0))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(b, y0)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, y0))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, y0)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a)))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a))))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b)))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b))))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c)))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c))))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1)))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1))))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1)))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1))))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1)))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1))))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1)))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1))))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1)))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1))))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, a))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, a)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, b))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, b)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, c))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, c)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1)))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1))))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(y1, a)))) -> c4(ENCARG(cons_f(a, cons_f(y1, a))))
   ENCARG(cons_f(a, cons_f(a, cons_f(y1, b)))) -> c4(ENCARG(cons_f(a, cons_f(y1, b))))
   ENCARG(cons_f(a, cons_f(a, cons_f(y1, c)))) -> c4(ENCARG(cons_f(a, cons_f(y1, c))))
   ENCARG(cons_f(a, cons_f(a, cons_f(y1, cons_f(y2, y3))))) -> c4(ENCARG(cons_f(a, cons_f(y1, cons_f(y2, y3)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y1, y2), y3)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y1, y2), y3))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(a, y0))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(a, y0)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, y0))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, y0)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(c, y0))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(c, y0)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, a)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, a))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, b)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, b))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, c)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, c))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(y0, cons_f(a, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(a, y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(y0, cons_f(b, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(b, y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(a, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(y0, y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(y0, y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(c, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(c, cons_f(y0, y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(y0, a), y1))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, a), y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(y0, b), y1))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, b), y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(y0, c), y1))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, c), y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(b, y0), y1))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(b, y0), y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), a))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), a)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), b))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), b)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), c))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), c)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(a, y0), y1))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(a, y0), y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(c, a))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(c, a)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(c, b))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(c, b)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(c, c))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(c, c)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(y0, cons_f(c, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(c, y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(c, y0), y1))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(c, y0), y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, y0))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, y0)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(c, y0))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(c, y0)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, a)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, a))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, b)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, b))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, c)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, c))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(y0, cons_f(a, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(a, y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(y0, cons_f(b, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(b, y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(y0, y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(c, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(c, cons_f(y0, y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(y0, a), y1))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, a), y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(y0, b), y1))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, b), y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(y0, c), y1))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, c), y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(b, y0), y1))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(b, y0), y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), a))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), a)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), b))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), b)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), c))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), c)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(a, y0), y1))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(a, y0), y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(c, a))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(c, a)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(c, b))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(c, b)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(c, c))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(c, c)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(y0, cons_f(c, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(c, y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(c, y0), y1))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(c, y0), y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(a, y0)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, y0))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, y0)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, y0))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(c, y0)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, y0))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(c, a)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, a))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(c, b)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, b))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(c, c)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, c))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(y1, a)))) -> c4(ENCARG(cons_f(b, cons_f(y1, a))))
   ENCARG(cons_f(a, cons_f(b, cons_f(y1, b)))) -> c4(ENCARG(cons_f(b, cons_f(y1, b))))
   ENCARG(cons_f(a, cons_f(b, cons_f(y1, c)))) -> c4(ENCARG(cons_f(b, cons_f(y1, c))))
   ENCARG(cons_f(a, cons_f(b, cons_f(y1, cons_f(y2, y3))))) -> c4(ENCARG(cons_f(b, cons_f(y1, cons_f(y2, y3)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, y1)))) -> c4(ENCARG(cons_f(b, cons_f(a, y1))))
   ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y1, y2), y3)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y1, y2), y3))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(b, y0))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(b, y0)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(c, y0))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(c, y0)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(y0, cons_f(y1, a)))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(y1, a))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(y0, cons_f(y1, b)))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(y1, b))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(y0, cons_f(y1, c)))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(y1, c))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(y0, cons_f(a, y1)))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(a, y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(y0, cons_f(b, y1)))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(b, y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(b, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(b, cons_f(y0, y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(c, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(c, cons_f(y0, y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(cons_f(y0, a), y1))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, a), y1)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(cons_f(y0, b), y1))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, b), y1)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(cons_f(y0, c), y1))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, c), y1)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(cons_f(b, y0), y1))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(b, y0), y1)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(cons_f(y0, y1), a))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, y1), a)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(cons_f(y0, y1), b))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, y1), b)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(cons_f(y0, y1), c))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, y1), c)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(cons_f(a, y0), y1))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(a, y0), y1)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(c, a))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(c, a)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(c, b))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(c, b)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(c, c))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(c, c)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(y0, cons_f(c, y1)))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(c, y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(cons_f(c, y0), y1))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(c, y0), y1)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(a, y0)))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(a, y0))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(b, y0)))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(b, y0))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(c, y0)))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(c, y0))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a))))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b))))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c))))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1))))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1))))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1)))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1)))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1)))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1)))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a)))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b)))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c)))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1)))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(c, a)))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(c, a))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(c, b)))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(c, b))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(c, c)))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(c, c))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1))))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1)))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(a, y0)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(a, y0))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(b, y0)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(b, y0))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(c, y0)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(c, y0))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, a))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, a)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, b))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, b)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, c))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, c)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(a, y1))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(a, y1)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(b, y1))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(b, y1)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(a, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(a, cons_f(y0, y1)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(b, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(b, cons_f(y0, y1)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(c, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(c, cons_f(y0, y1)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, a), y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, a), y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, b), y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, b), y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, c), y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, c), y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(b, y0), y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(b, y0), y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), a)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), a))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), b)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), b))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), c)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), c))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(a, y0), y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(a, y0), y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(c, a)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(c, a))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(c, b)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(c, b))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(c, c)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(c, c))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(c, y1))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(c, y1)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(c, y0), y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(c, y0), y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(b, y0)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(b, y0))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(c, y0)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(c, y0))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, a))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, a)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, b))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, b)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, c))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, c)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(a, y1))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(a, y1)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(b, y1))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(b, y1)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, y1)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(b, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(b, cons_f(y0, y1)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(c, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(c, cons_f(y0, y1)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, a), y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, a), y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, b), y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, b), y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, c), y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, c), y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(b, y0), y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(b, y0), y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), a)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), a))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), b)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), b))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), c)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), c))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(a, y0), y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(a, y0), y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(c, a)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(c, a))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(c, b)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(c, b))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(c, c)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(c, c))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(c, y1))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(c, y1)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(c, y0), y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(c, y0), y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(a, y0))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(a, y0)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(b, y0))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(b, y0)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, y0))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, y0)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a)))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a))))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b)))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b))))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c)))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c))))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1)))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1))))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1)))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1))))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1)))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1))))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1)))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1))))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1)))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1))))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, a))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, a)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, b))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, b)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, c))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, c)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1)))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1))))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1)))))))
S tuples:
   F(f(f(a, z0), z1), z2) -> c9(F(f(z0, z2), f(z1, z2)), F(z0, z2), F(z1, z2))
   F(f(b, z0), z1) -> c10
   F(c, z0) -> c11
K tuples:none
Defined Rule Symbols:   encArg_1, f_2

Defined Pair Symbols:   F_2, ENCARG_1, ENCODE_F_2

Compound Symbols:   c9_3, c10, c11, c4_2, c1_1, c4_3, c4_1


----------------------------------------

(121) CdtForwardInstantiationProof (BOTH BOUNDS(ID, ID))
Use forward instantiation to replace ENCARG(cons_f(a, cons_f(a, cons_f(y0, y1)))) -> c4(ENCARG(cons_f(a, cons_f(y0, y1)))) by 
   ENCARG(cons_f(a, cons_f(a, cons_f(z0, a)))) -> c4(ENCARG(cons_f(a, cons_f(z0, a))))
   ENCARG(cons_f(a, cons_f(a, cons_f(z0, b)))) -> c4(ENCARG(cons_f(a, cons_f(z0, b))))
   ENCARG(cons_f(a, cons_f(a, cons_f(z0, c)))) -> c4(ENCARG(cons_f(a, cons_f(z0, c))))
   ENCARG(cons_f(a, cons_f(a, cons_f(z0, cons_f(y2, y3))))) -> c4(ENCARG(cons_f(a, cons_f(z0, cons_f(y2, y3)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, z1)))) -> c4(ENCARG(cons_f(a, cons_f(a, z1))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, z1)))) -> c4(ENCARG(cons_f(a, cons_f(b, z1))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y1, y2), z1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y1, y2), z1))))
   ENCARG(cons_f(a, cons_f(a, cons_f(c, z1)))) -> c4(ENCARG(cons_f(a, cons_f(c, z1))))
   ENCARG(cons_f(a, cons_f(a, cons_f(z0, cons_f(y1, a))))) -> c4(ENCARG(cons_f(a, cons_f(z0, cons_f(y1, a)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(z0, cons_f(y1, b))))) -> c4(ENCARG(cons_f(a, cons_f(z0, cons_f(y1, b)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(z0, cons_f(y1, c))))) -> c4(ENCARG(cons_f(a, cons_f(z0, cons_f(y1, c)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(z0, cons_f(y1, cons_f(y2, y3)))))) -> c4(ENCARG(cons_f(a, cons_f(z0, cons_f(y1, cons_f(y2, y3))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(z0, cons_f(a, y1))))) -> c4(ENCARG(cons_f(a, cons_f(z0, cons_f(a, y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(z0, cons_f(b, y1))))) -> c4(ENCARG(cons_f(a, cons_f(z0, cons_f(b, y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(z0, cons_f(cons_f(y1, y2), y3))))) -> c4(ENCARG(cons_f(a, cons_f(z0, cons_f(cons_f(y1, y2), y3)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(c, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(a, cons_f(c, cons_f(y0, y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, a), z1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, a), z1))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, b), z1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, b), z1))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, c), z1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, c), z1))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), z1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), z1))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(b, y0), z1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(b, y0), z1))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), z1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), z1))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), a)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, y1), a))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), b)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, y1), b))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), c)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, y1), c))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(a, y0), z1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(a, y0), z1))))
   ENCARG(cons_f(a, cons_f(a, cons_f(c, a)))) -> c4(ENCARG(cons_f(a, cons_f(c, a))))
   ENCARG(cons_f(a, cons_f(a, cons_f(c, b)))) -> c4(ENCARG(cons_f(a, cons_f(c, b))))
   ENCARG(cons_f(a, cons_f(a, cons_f(c, c)))) -> c4(ENCARG(cons_f(a, cons_f(c, c))))
   ENCARG(cons_f(a, cons_f(a, cons_f(z0, cons_f(c, y1))))) -> c4(ENCARG(cons_f(a, cons_f(z0, cons_f(c, y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(c, y0), z1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(c, y0), z1))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(a, y0))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(a, y0)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, y0))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, y0)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(c, y0))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(c, y0)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, a)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, a))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, b)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, b))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, c)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, c))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(y0, cons_f(a, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(a, y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(y0, cons_f(b, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(b, y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(a, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(y0, y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(y0, y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(c, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(c, cons_f(y0, y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(y0, a), y1))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, a), y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(y0, b), y1))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, b), y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(y0, c), y1))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, c), y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(b, y0), y1))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(b, y0), y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), a))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), a)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), b))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), b)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), c))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), c)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(a, y0), y1))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(a, y0), y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(c, a))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(c, a)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(c, b))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(c, b)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(c, c))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(c, c)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(y0, cons_f(c, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(c, y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(c, y0), y1))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(c, y0), y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, y0))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, y0)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(c, y0))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(c, y0)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, a)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, a))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, b)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, b))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, c)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, c))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(y0, cons_f(a, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(a, y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(y0, cons_f(b, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(b, y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(y0, y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(c, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(c, cons_f(y0, y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(y0, a), y1))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, a), y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(y0, b), y1))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, b), y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(y0, c), y1))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, c), y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(b, y0), y1))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(b, y0), y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), a))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), a)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), b))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), b)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), c))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), c)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(a, y0), y1))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(a, y0), y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(c, a))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(c, a)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(c, b))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(c, b)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(c, c))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(c, c)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(y0, cons_f(c, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(c, y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(c, y0), y1))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(c, y0), y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(a, y0)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, y0))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, y0)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, y0))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(c, y0)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, y0))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(c, a)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, a))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(c, b)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, b))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(c, c)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, c))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(y0, a))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, a)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(y0, b))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, b)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(y0, c))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, c)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, y2)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, y2))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), y2))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), y2)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(a, cons_f(a, y0)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(a, y0))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(a, cons_f(b, y0)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, y0))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(a, cons_f(c, y0)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(c, y0))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, a))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, a)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, b))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, b)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, c))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, c)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(a, cons_f(y0, cons_f(a, y1))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(y0, cons_f(a, y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(a, cons_f(y0, cons_f(b, y1))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(y0, cons_f(b, y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(a, cons_f(a, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(a, cons_f(y0, y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(y0, y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(a, cons_f(c, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(c, cons_f(y0, y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(y0, a), y1)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(y0, a), y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(y0, b), y1)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(y0, b), y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(y0, c), y1)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(y0, c), y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(b, y0), y1)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(b, y0), y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), a)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), a))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), b)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), b))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), c)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), c))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(a, y0), y1)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(a, y0), y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(a, cons_f(c, a)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(c, a))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(a, cons_f(c, b)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(c, b))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(a, cons_f(c, c)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(c, c))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(a, cons_f(y0, cons_f(c, y1))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(y0, cons_f(c, y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(c, y0), y1)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(c, y0), y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(b, y0)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, y0))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(c, y0)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(c, y0))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, a))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, a)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, b))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, b)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, c))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, c)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(y0, cons_f(a, y1))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(y0, cons_f(a, y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(y0, cons_f(b, y1))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(y0, cons_f(b, y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(y0, y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(c, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(c, cons_f(y0, y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(y0, a), y1)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(y0, a), y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(y0, b), y1)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(y0, b), y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(y0, c), y1)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(y0, c), y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(b, y0), y1)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(b, y0), y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), a)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), a))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), b)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), b))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), c)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), c))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(a, y0), y1)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(a, y0), y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(c, a)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(c, a))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(c, b)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(c, b))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(c, c)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(c, c))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(y0, cons_f(c, y1))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(y0, cons_f(c, y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(c, y0), y1)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(c, y0), y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(a, y0))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(a, y0)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, y0))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, y0)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(c, y0))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(c, y0)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a)))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b)))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c)))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1)))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1)))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1)))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1)))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1)))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(c, a))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(c, a)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(c, b))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(c, b)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(c, c))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(c, c)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1)))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(y0, a))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, a)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(y0, b))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, b)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(y0, c))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, c)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, y2)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, y2))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, y0))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, y0)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), y2))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), y2)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(b, y0)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(b, y0))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(c, y0)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(c, y0))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(y0, cons_f(y1, a))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(y0, cons_f(y1, a)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(y0, cons_f(y1, b))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(y0, cons_f(y1, b)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(y0, cons_f(y1, c))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(y0, cons_f(y1, c)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(y0, cons_f(a, y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(y0, cons_f(a, y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(y0, cons_f(b, y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(y0, cons_f(b, y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(y0, y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(b, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(b, cons_f(y0, y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(c, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(c, cons_f(y0, y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(cons_f(y0, a), y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(cons_f(y0, a), y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(cons_f(y0, b), y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(cons_f(y0, b), y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(cons_f(y0, c), y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(cons_f(y0, c), y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(cons_f(b, y0), y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(cons_f(b, y0), y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(cons_f(y0, y1), a)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(cons_f(y0, y1), a))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(cons_f(y0, y1), b)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(cons_f(y0, y1), b))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(cons_f(y0, y1), c)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(cons_f(y0, y1), c))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(cons_f(a, y0), y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(cons_f(a, y0), y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(c, a)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(c, a))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(c, b)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(c, b))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(c, c)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(c, c))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(y0, cons_f(c, y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(y0, cons_f(c, y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(cons_f(c, y0), y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(cons_f(c, y0), y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(a, y0))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(a, y0)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(b, y0))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(b, y0)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(c, y0))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(c, y0)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(c, a))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(c, a)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(c, b))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(c, b)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(c, c))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(c, c)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(a, y0))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(a, y0)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(b, y0))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(b, y0)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(c, y0))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(c, y0)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, a)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, a))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, b)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, b))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, c)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, c))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(a, y1)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(a, y1))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(b, y1)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(b, y1))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(a, cons_f(y0, y1)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(a, cons_f(y0, y1))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(b, cons_f(y0, y1)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(b, cons_f(y0, y1))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(c, cons_f(y0, y1)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(c, cons_f(y0, y1))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, a), y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, a), y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, b), y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, b), y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, c), y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, c), y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(b, y0), y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(b, y0), y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), a))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), a)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), b))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), b)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), c))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), c)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(a, y0), y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(a, y0), y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(c, a))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(c, a)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(c, b))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(c, b)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(c, c))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(c, c)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(c, y1)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(c, y1))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(c, y0), y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(c, y0), y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(b, y0))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(b, y0)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(c, y0))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(c, y0)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, a)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, a))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, b)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, b))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, c)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, c))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(a, y1)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(a, y1))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(b, y1)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(b, y1))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, y1)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, y1))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(b, cons_f(y0, y1)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(b, cons_f(y0, y1))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(c, cons_f(y0, y1)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(c, cons_f(y0, y1))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, a), y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, a), y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, b), y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, b), y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, c), y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, c), y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(b, y0), y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(b, y0), y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), a))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), a)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), b))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), b)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), c))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), c)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(a, y0), y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(a, y0), y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(c, a))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(c, a)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(c, b))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(c, b)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(c, c))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(c, c)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(c, y1)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(c, y1))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(c, y0), y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(c, y0), y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(a, y0)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(a, y0))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(b, y0)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(b, y0))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, y0)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, y0))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a))))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a)))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b))))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b)))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c))))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c)))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1))))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1)))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1))))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1)))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1))))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1)))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1))))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1)))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1))))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1)))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, a)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, a))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, b)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, b))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, c)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, c))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1))))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1)))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1))))))))

----------------------------------------

(122)
Obligation:
Complexity Dependency Tuples Problem

Rules:
   encArg(a) -> a
   encArg(b) -> b
   encArg(c) -> c
   encArg(cons_f(z0, z1)) -> f(encArg(z0), encArg(z1))
   f(f(f(a, z0), z1), z2) -> f(f(z0, z2), f(z1, z2))
   f(f(b, z0), z1) -> z0
   f(c, z0) -> z0
Tuples:
   F(f(f(a, z0), z1), z2) -> c9(F(f(z0, z2), f(z1, z2)), F(z0, z2), F(z1, z2))
   F(f(b, z0), z1) -> c10
   F(c, z0) -> c11
   ENCARG(cons_f(c, x1)) -> c4(F(c, encArg(x1)), ENCARG(x1))
   ENCODE_F(c, x1) -> c1(F(c, encArg(x1)))
   ENCARG(cons_f(x0, cons_f(x1, a))) -> c4(F(encArg(x0), f(encArg(x1), a)), ENCARG(x0), ENCARG(cons_f(x1, a)))
   ENCARG(cons_f(x0, cons_f(x1, b))) -> c4(F(encArg(x0), f(encArg(x1), b)), ENCARG(x0), ENCARG(cons_f(x1, b)))
   ENCARG(cons_f(x0, cons_f(x1, c))) -> c4(F(encArg(x0), f(encArg(x1), c)), ENCARG(x0), ENCARG(cons_f(x1, c)))
   ENCARG(cons_f(x0, cons_f(x1, cons_f(z0, z1)))) -> c4(F(encArg(x0), f(encArg(x1), f(encArg(z0), encArg(z1)))), ENCARG(x0), ENCARG(cons_f(x1, cons_f(z0, z1))))
   ENCARG(cons_f(x0, cons_f(a, x2))) -> c4(F(encArg(x0), f(a, encArg(x2))), ENCARG(x0), ENCARG(cons_f(a, x2)))
   ENCARG(cons_f(x0, cons_f(b, x2))) -> c4(F(encArg(x0), f(b, encArg(x2))), ENCARG(x0), ENCARG(cons_f(b, x2)))
   ENCARG(cons_f(x0, cons_f(cons_f(z0, z1), x2))) -> c4(F(encArg(x0), f(f(encArg(z0), encArg(z1)), encArg(x2))), ENCARG(x0), ENCARG(cons_f(cons_f(z0, z1), x2)))
   ENCARG(cons_f(cons_f(z0, z1), cons_f(x1, x2))) -> c4(F(f(encArg(z0), encArg(z1)), f(encArg(x1), encArg(x2))), ENCARG(cons_f(z0, z1)), ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(c, cons_f(x1, x2))) -> c4(F(c, f(encArg(x1), encArg(x2))), ENCARG(cons_f(x1, x2)))
   ENCARG(cons_f(cons_f(x0, a), x2)) -> c4(F(f(encArg(x0), a), encArg(x2)), ENCARG(cons_f(x0, a)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, b), x2)) -> c4(F(f(encArg(x0), b), encArg(x2)), ENCARG(cons_f(x0, b)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, c), x2)) -> c4(F(f(encArg(x0), c), encArg(x2)), ENCARG(cons_f(x0, c)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, cons_f(z0, z1)), x2)) -> c4(F(f(encArg(x0), f(encArg(z0), encArg(z1))), encArg(x2)), ENCARG(cons_f(x0, cons_f(z0, z1))), ENCARG(x2))
   ENCARG(cons_f(cons_f(b, x1), x2)) -> c4(F(f(b, encArg(x1)), encArg(x2)), ENCARG(cons_f(b, x1)), ENCARG(x2))
   ENCARG(cons_f(cons_f(cons_f(z0, z1), x1), x2)) -> c4(F(f(f(encArg(z0), encArg(z1)), encArg(x1)), encArg(x2)), ENCARG(cons_f(cons_f(z0, z1), x1)), ENCARG(x2))
   ENCARG(cons_f(cons_f(x0, x1), a)) -> c4(F(f(encArg(x0), encArg(x1)), a), ENCARG(cons_f(x0, x1)))
   ENCARG(cons_f(cons_f(x0, x1), b)) -> c4(F(f(encArg(x0), encArg(x1)), b), ENCARG(cons_f(x0, x1)))
   ENCARG(cons_f(cons_f(x0, x1), c)) -> c4(F(f(encArg(x0), encArg(x1)), c), ENCARG(cons_f(x0, x1)))
   ENCARG(cons_f(c, a)) -> c4(F(c, a))
   ENCARG(cons_f(c, b)) -> c4(F(c, b))
   ENCARG(cons_f(c, c)) -> c4(F(c, c))
   ENCODE_F(cons_f(z0, z1), a) -> c1(F(f(encArg(z0), encArg(z1)), a))
   ENCODE_F(cons_f(z0, z1), b) -> c1(F(f(encArg(z0), encArg(z1)), b))
   ENCODE_F(cons_f(z0, z1), c) -> c1(F(f(encArg(z0), encArg(z1)), c))
   ENCODE_F(x0, cons_f(x1, a)) -> c1(F(encArg(x0), f(encArg(x1), a)))
   ENCODE_F(x0, cons_f(x1, b)) -> c1(F(encArg(x0), f(encArg(x1), b)))
   ENCODE_F(x0, cons_f(x1, c)) -> c1(F(encArg(x0), f(encArg(x1), c)))
   ENCODE_F(x0, cons_f(x1, cons_f(z0, z1))) -> c1(F(encArg(x0), f(encArg(x1), f(encArg(z0), encArg(z1)))))
   ENCODE_F(x0, cons_f(a, x2)) -> c1(F(encArg(x0), f(a, encArg(x2))))
   ENCODE_F(x0, cons_f(b, x2)) -> c1(F(encArg(x0), f(b, encArg(x2))))
   ENCODE_F(x0, cons_f(cons_f(z0, z1), x2)) -> c1(F(encArg(x0), f(f(encArg(z0), encArg(z1)), encArg(x2))))
   ENCODE_F(c, cons_f(x1, x2)) -> c1(F(c, f(encArg(x1), encArg(x2))))
   ENCODE_F(cons_f(z0, z1), cons_f(x1, x2)) -> c1(F(f(encArg(z0), encArg(z1)), f(encArg(x1), encArg(x2))))
   ENCODE_F(cons_f(x0, a), x2) -> c1(F(f(encArg(x0), a), encArg(x2)))
   ENCODE_F(cons_f(x0, b), x2) -> c1(F(f(encArg(x0), b), encArg(x2)))
   ENCODE_F(cons_f(x0, c), x2) -> c1(F(f(encArg(x0), c), encArg(x2)))
   ENCODE_F(cons_f(x0, cons_f(z0, z1)), x2) -> c1(F(f(encArg(x0), f(encArg(z0), encArg(z1))), encArg(x2)))
   ENCODE_F(cons_f(b, x1), x2) -> c1(F(f(b, encArg(x1)), encArg(x2)))
   ENCODE_F(cons_f(cons_f(z0, z1), x1), x2) -> c1(F(f(f(encArg(z0), encArg(z1)), encArg(x1)), encArg(x2)))
   ENCARG(cons_f(z0, cons_f(c, z1))) -> c4(F(encArg(z0), encArg(z1)), ENCARG(z0), ENCARG(cons_f(c, z1)))
   ENCARG(cons_f(cons_f(c, z0), z1)) -> c4(F(encArg(z0), encArg(z1)), ENCARG(cons_f(c, z0)), ENCARG(z1))
   ENCODE_F(z0, cons_f(c, z1)) -> c1(F(encArg(z0), encArg(z1)))
   ENCODE_F(cons_f(c, z0), z1) -> c1(F(encArg(z0), encArg(z1)))
   ENCARG(cons_f(a, cons_f(c, y0))) -> c4(ENCARG(cons_f(c, y0)))
   ENCARG(cons_f(a, cons_f(y0, cons_f(y1, a)))) -> c4(ENCARG(cons_f(y0, cons_f(y1, a))))
   ENCARG(cons_f(a, cons_f(y0, cons_f(y1, b)))) -> c4(ENCARG(cons_f(y0, cons_f(y1, b))))
   ENCARG(cons_f(a, cons_f(y0, cons_f(y1, c)))) -> c4(ENCARG(cons_f(y0, cons_f(y1, c))))
   ENCARG(cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))) -> c4(ENCARG(cons_f(y0, cons_f(y1, cons_f(y2, y3)))))
   ENCARG(cons_f(a, cons_f(y0, cons_f(a, y1)))) -> c4(ENCARG(cons_f(y0, cons_f(a, y1))))
   ENCARG(cons_f(a, cons_f(y0, cons_f(b, y1)))) -> c4(ENCARG(cons_f(y0, cons_f(b, y1))))
   ENCARG(cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))) -> c4(ENCARG(cons_f(y0, cons_f(cons_f(y1, y2), y3))))
   ENCARG(cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))) -> c4(ENCARG(cons_f(cons_f(y0, y1), cons_f(y2, y3))))
   ENCARG(cons_f(a, cons_f(a, cons_f(y0, y1)))) -> c4(ENCARG(cons_f(a, cons_f(y0, y1))))
   ENCARG(cons_f(a, cons_f(b, cons_f(y0, y1)))) -> c4(ENCARG(cons_f(b, cons_f(y0, y1))))
   ENCARG(cons_f(a, cons_f(c, cons_f(y0, y1)))) -> c4(ENCARG(cons_f(c, cons_f(y0, y1))))
   ENCARG(cons_f(a, cons_f(cons_f(y0, a), y1))) -> c4(ENCARG(cons_f(cons_f(y0, a), y1)))
   ENCARG(cons_f(a, cons_f(cons_f(y0, b), y1))) -> c4(ENCARG(cons_f(cons_f(y0, b), y1)))
   ENCARG(cons_f(a, cons_f(cons_f(y0, c), y1))) -> c4(ENCARG(cons_f(cons_f(y0, c), y1)))
   ENCARG(cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))) -> c4(ENCARG(cons_f(cons_f(y0, cons_f(y1, y2)), y3)))
   ENCARG(cons_f(a, cons_f(cons_f(b, y0), y1))) -> c4(ENCARG(cons_f(cons_f(b, y0), y1)))
   ENCARG(cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))) -> c4(ENCARG(cons_f(cons_f(cons_f(y0, y1), y2), y3)))
   ENCARG(cons_f(a, cons_f(cons_f(y0, y1), a))) -> c4(ENCARG(cons_f(cons_f(y0, y1), a)))
   ENCARG(cons_f(a, cons_f(cons_f(y0, y1), b))) -> c4(ENCARG(cons_f(cons_f(y0, y1), b)))
   ENCARG(cons_f(a, cons_f(cons_f(y0, y1), c))) -> c4(ENCARG(cons_f(cons_f(y0, y1), c)))
   ENCARG(cons_f(a, cons_f(cons_f(a, y0), y1))) -> c4(ENCARG(cons_f(cons_f(a, y0), y1)))
   ENCARG(cons_f(a, cons_f(c, a))) -> c4(ENCARG(cons_f(c, a)))
   ENCARG(cons_f(a, cons_f(c, b))) -> c4(ENCARG(cons_f(c, b)))
   ENCARG(cons_f(a, cons_f(c, c))) -> c4(ENCARG(cons_f(c, c)))
   ENCARG(cons_f(a, cons_f(y0, cons_f(c, y1)))) -> c4(ENCARG(cons_f(y0, cons_f(c, y1))))
   ENCARG(cons_f(a, cons_f(cons_f(c, y0), y1))) -> c4(ENCARG(cons_f(cons_f(c, y0), y1)))
   ENCARG(cons_f(b, cons_f(b, y0))) -> c4(ENCARG(cons_f(b, y0)))
   ENCARG(cons_f(b, cons_f(c, y0))) -> c4(ENCARG(cons_f(c, y0)))
   ENCARG(cons_f(b, cons_f(y0, cons_f(y1, a)))) -> c4(ENCARG(cons_f(y0, cons_f(y1, a))))
   ENCARG(cons_f(b, cons_f(y0, cons_f(y1, b)))) -> c4(ENCARG(cons_f(y0, cons_f(y1, b))))
   ENCARG(cons_f(b, cons_f(y0, cons_f(y1, c)))) -> c4(ENCARG(cons_f(y0, cons_f(y1, c))))
   ENCARG(cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3))))) -> c4(ENCARG(cons_f(y0, cons_f(y1, cons_f(y2, y3)))))
   ENCARG(cons_f(b, cons_f(y0, cons_f(a, y1)))) -> c4(ENCARG(cons_f(y0, cons_f(a, y1))))
   ENCARG(cons_f(b, cons_f(y0, cons_f(b, y1)))) -> c4(ENCARG(cons_f(y0, cons_f(b, y1))))
   ENCARG(cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3)))) -> c4(ENCARG(cons_f(y0, cons_f(cons_f(y1, y2), y3))))
   ENCARG(cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3)))) -> c4(ENCARG(cons_f(cons_f(y0, y1), cons_f(y2, y3))))
   ENCARG(cons_f(b, cons_f(a, cons_f(y0, y1)))) -> c4(ENCARG(cons_f(a, cons_f(y0, y1))))
   ENCARG(cons_f(b, cons_f(b, cons_f(y0, y1)))) -> c4(ENCARG(cons_f(b, cons_f(y0, y1))))
   ENCARG(cons_f(b, cons_f(c, cons_f(y0, y1)))) -> c4(ENCARG(cons_f(c, cons_f(y0, y1))))
   ENCARG(cons_f(b, cons_f(cons_f(y0, a), y1))) -> c4(ENCARG(cons_f(cons_f(y0, a), y1)))
   ENCARG(cons_f(b, cons_f(cons_f(y0, b), y1))) -> c4(ENCARG(cons_f(cons_f(y0, b), y1)))
   ENCARG(cons_f(b, cons_f(cons_f(y0, c), y1))) -> c4(ENCARG(cons_f(cons_f(y0, c), y1)))
   ENCARG(cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3))) -> c4(ENCARG(cons_f(cons_f(y0, cons_f(y1, y2)), y3)))
   ENCARG(cons_f(b, cons_f(cons_f(b, y0), y1))) -> c4(ENCARG(cons_f(cons_f(b, y0), y1)))
   ENCARG(cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3))) -> c4(ENCARG(cons_f(cons_f(cons_f(y0, y1), y2), y3)))
   ENCARG(cons_f(b, cons_f(cons_f(y0, y1), a))) -> c4(ENCARG(cons_f(cons_f(y0, y1), a)))
   ENCARG(cons_f(b, cons_f(cons_f(y0, y1), b))) -> c4(ENCARG(cons_f(cons_f(y0, y1), b)))
   ENCARG(cons_f(b, cons_f(cons_f(y0, y1), c))) -> c4(ENCARG(cons_f(cons_f(y0, y1), c)))
   ENCARG(cons_f(b, cons_f(cons_f(a, y0), y1))) -> c4(ENCARG(cons_f(cons_f(a, y0), y1)))
   ENCARG(cons_f(b, cons_f(c, a))) -> c4(ENCARG(cons_f(c, a)))
   ENCARG(cons_f(b, cons_f(c, b))) -> c4(ENCARG(cons_f(c, b)))
   ENCARG(cons_f(b, cons_f(c, c))) -> c4(ENCARG(cons_f(c, c)))
   ENCARG(cons_f(b, cons_f(y0, cons_f(c, y1)))) -> c4(ENCARG(cons_f(y0, cons_f(c, y1))))
   ENCARG(cons_f(b, cons_f(cons_f(c, y0), y1))) -> c4(ENCARG(cons_f(cons_f(c, y0), y1)))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, y0)))) -> c4(ENCARG(cons_f(a, cons_f(a, y0))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, y0)))) -> c4(ENCARG(cons_f(a, cons_f(b, y0))))
   ENCARG(cons_f(b, cons_f(a, cons_f(c, y0)))) -> c4(ENCARG(cons_f(a, cons_f(c, y0))))
   ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(y1, a)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(y1, b)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(y1, c)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(a, y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(b, y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(a, cons_f(c, cons_f(y0, y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, a), y1))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, b), y1))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, c), y1))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(b, y0), y1))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, y1), a))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, y1), b))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, y1), c))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(a, y0), y1))))
   ENCARG(cons_f(b, cons_f(a, cons_f(c, a)))) -> c4(ENCARG(cons_f(a, cons_f(c, a))))
   ENCARG(cons_f(b, cons_f(a, cons_f(c, b)))) -> c4(ENCARG(cons_f(a, cons_f(c, b))))
   ENCARG(cons_f(b, cons_f(a, cons_f(c, c)))) -> c4(ENCARG(cons_f(a, cons_f(c, c))))
   ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(c, y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(c, y0), y1))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, y0)))) -> c4(ENCARG(cons_f(a, cons_f(a, y0))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, y0)))) -> c4(ENCARG(cons_f(a, cons_f(b, y0))))
   ENCARG(cons_f(a, cons_f(a, cons_f(c, y0)))) -> c4(ENCARG(cons_f(a, cons_f(c, y0))))
   ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, a))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(y1, a)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, b))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(y1, b)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, c))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(y1, c)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(a, y1))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(a, y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(b, y1))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(b, y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(c, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(a, cons_f(c, cons_f(y0, y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, a), y1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, a), y1))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, b), y1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, b), y1))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, c), y1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, c), y1))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(b, y0), y1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(b, y0), y1))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), a)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, y1), a))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), b)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, y1), b))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), c)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, y1), c))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(a, y0), y1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(a, y0), y1))))
   ENCARG(cons_f(a, cons_f(a, cons_f(c, a)))) -> c4(ENCARG(cons_f(a, cons_f(c, a))))
   ENCARG(cons_f(a, cons_f(a, cons_f(c, b)))) -> c4(ENCARG(cons_f(a, cons_f(c, b))))
   ENCARG(cons_f(a, cons_f(a, cons_f(c, c)))) -> c4(ENCARG(cons_f(a, cons_f(c, c))))
   ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(c, y1))))) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(c, y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(c, y0), y1)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(c, y0), y1))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, y0)))) -> c4(ENCARG(cons_f(b, cons_f(b, y0))))
   ENCARG(cons_f(a, cons_f(b, cons_f(c, y0)))) -> c4(ENCARG(cons_f(b, cons_f(c, y0))))
   ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, a))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(y1, a)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, b))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(y1, b)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, c))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(y1, c)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(a, y1))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(a, y1)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(b, y1))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(b, y1)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3))))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, y1)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(y0, y1)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(c, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(b, cons_f(c, cons_f(y0, y1)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, a), y1)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, a), y1))))
   ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, b), y1)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, b), y1))))
   ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, c), y1)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, c), y1))))
   ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))
   ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(b, y0), y1)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(b, y0), y1))))
   ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3))))
   ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), a)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, y1), a))))
   ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), b)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, y1), b))))
   ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), c)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, y1), c))))
   ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(a, y0), y1)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(a, y0), y1))))
   ENCARG(cons_f(a, cons_f(b, cons_f(c, a)))) -> c4(ENCARG(cons_f(b, cons_f(c, a))))
   ENCARG(cons_f(a, cons_f(b, cons_f(c, b)))) -> c4(ENCARG(cons_f(b, cons_f(c, b))))
   ENCARG(cons_f(a, cons_f(b, cons_f(c, c)))) -> c4(ENCARG(cons_f(b, cons_f(c, c))))
   ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(c, y1))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(c, y1)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(c, y0), y1)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(c, y0), y1))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, y0))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, y0)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, y0))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, y0)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, y0))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(c, y0)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, a))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(c, a)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, b))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(c, b)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, c))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(c, c)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(b, y0)))) -> c4(ENCARG(cons_f(b, cons_f(b, y0))))
   ENCARG(cons_f(b, cons_f(b, cons_f(c, y0)))) -> c4(ENCARG(cons_f(b, cons_f(c, y0))))
   ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(y1, a))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(y1, a)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(y1, b))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(y1, b)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(y1, c))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(y1, c)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))
   ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(a, y1))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(a, y1)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(b, y1))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(b, y1)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3))))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, y1)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(b, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(y0, y1)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(c, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(b, cons_f(c, cons_f(y0, y1)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, a), y1)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, a), y1))))
   ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, b), y1)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, b), y1))))
   ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, c), y1)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, c), y1))))
   ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))
   ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(b, y0), y1)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(b, y0), y1))))
   ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3))))
   ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, y1), a)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, y1), a))))
   ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, y1), b)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, y1), b))))
   ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, y1), c)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y0, y1), c))))
   ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(a, y0), y1)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(a, y0), y1))))
   ENCARG(cons_f(b, cons_f(b, cons_f(c, a)))) -> c4(ENCARG(cons_f(b, cons_f(c, a))))
   ENCARG(cons_f(b, cons_f(b, cons_f(c, b)))) -> c4(ENCARG(cons_f(b, cons_f(c, b))))
   ENCARG(cons_f(b, cons_f(b, cons_f(c, c)))) -> c4(ENCARG(cons_f(b, cons_f(c, c))))
   ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(c, y1))))) -> c4(ENCARG(cons_f(b, cons_f(y0, cons_f(c, y1)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(c, y0), y1)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(c, y0), y1))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(a, y0))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, y0)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(b, y0))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, y0)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(c, y0))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(c, y0)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a))))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b))))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c))))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1))))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1))))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1))))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1))))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1))))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(c, a))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(c, a)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(c, b))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(c, b)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(c, c))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(c, c)))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1))))))
   ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(a, y0))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(a, y0)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(b, y0))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, y0)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(c, y0))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(c, y0)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, a)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, a))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, b)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, b))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, c)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, c))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(a, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(a, y1))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(b, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(b, y1))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(a, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(y0, y1))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(b, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(y0, y1))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(c, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(c, cons_f(y0, y1))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, a), y1))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, a), y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, b), y1))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, b), y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, c), y1))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, c), y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(b, y0), y1))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(b, y0), y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), a))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), a)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), b))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), b)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), c))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), c)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(a, y0), y1))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(a, y0), y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(c, a))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(c, a)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(c, b))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(c, b)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(c, c))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(c, c)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(c, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(c, y1))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(c, y0), y1))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(c, y0), y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(b, y0))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, y0)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(c, y0))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(c, y0)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, a)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, a))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, b)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, b))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, c)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, c))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(a, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(a, y1))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(b, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(b, y1))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, y1))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(b, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(y0, y1))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(c, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(c, cons_f(y0, y1))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, a), y1))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, a), y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, b), y1))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, b), y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, c), y1))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, c), y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(b, y0), y1))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(b, y0), y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), a))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), a)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), b))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), b)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), c))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), c)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(a, y0), y1))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(a, y0), y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(c, a))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(c, a)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(c, b))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(c, b)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(c, c))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(c, c)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(c, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(c, y1))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(c, y0), y1))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(c, y0), y1)))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(a, y0)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, y0))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(b, y0)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, y0))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, y0)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, y0))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a)))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b)))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c)))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1)))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1)))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1)))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1)))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1)))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, a)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, a))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, b)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, b))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, c)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, c))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1)))))))
   ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(c, y0))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(c, y0)))
   ENCARG(cons_f(cons_f(a, cons_f(y1, a)), z1)) -> c4(ENCARG(cons_f(a, cons_f(y1, a))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(y0, cons_f(y1, a)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(y0, cons_f(y1, a))))
   ENCARG(cons_f(cons_f(a, cons_f(y1, b)), z1)) -> c4(ENCARG(cons_f(a, cons_f(y1, b))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(y0, cons_f(y1, b)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(y0, cons_f(y1, b))))
   ENCARG(cons_f(cons_f(a, cons_f(y1, c)), z1)) -> c4(ENCARG(cons_f(a, cons_f(y1, c))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(y0, cons_f(y1, c)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(y0, cons_f(y1, c))))
   ENCARG(cons_f(cons_f(a, cons_f(y1, cons_f(y2, y3))), z1)) -> c4(ENCARG(cons_f(a, cons_f(y1, cons_f(y2, y3)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(y0, cons_f(y1, cons_f(y2, y3))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(y0, cons_f(y1, cons_f(y2, y3)))))
   ENCARG(cons_f(cons_f(a, cons_f(a, y1)), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, y1))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(y0, cons_f(a, y1)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(y0, cons_f(a, y1))))
   ENCARG(cons_f(cons_f(a, cons_f(b, y1)), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, y1))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(y0, cons_f(b, y1)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(y0, cons_f(b, y1))))
   ENCARG(cons_f(cons_f(a, cons_f(cons_f(y1, y2), y3)), z1)) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y1, y2), y3))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(y0, cons_f(cons_f(y1, y2), y3)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(y0, cons_f(cons_f(y1, y2), y3))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(cons_f(y0, y1), cons_f(y2, y3)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(cons_f(y0, y1), cons_f(y2, y3))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(c, cons_f(y0, y1)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(c, cons_f(y0, y1))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(cons_f(y0, a), y1))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(cons_f(y0, a), y1)))
   ENCARG(cons_f(cons_f(a, z0), cons_f(cons_f(y0, b), y1))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(cons_f(y0, b), y1)))
   ENCARG(cons_f(cons_f(a, z0), cons_f(cons_f(y0, c), y1))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(cons_f(y0, c), y1)))
   ENCARG(cons_f(cons_f(a, z0), cons_f(cons_f(y0, cons_f(y1, y2)), y3))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(cons_f(y0, cons_f(y1, y2)), y3)))
   ENCARG(cons_f(cons_f(a, z0), cons_f(cons_f(b, y0), y1))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(cons_f(b, y0), y1)))
   ENCARG(cons_f(cons_f(a, z0), cons_f(cons_f(cons_f(y0, y1), y2), y3))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(cons_f(cons_f(y0, y1), y2), y3)))
   ENCARG(cons_f(cons_f(a, z0), cons_f(cons_f(y0, y1), a))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(cons_f(y0, y1), a)))
   ENCARG(cons_f(cons_f(a, z0), cons_f(cons_f(y0, y1), b))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(cons_f(y0, y1), b)))
   ENCARG(cons_f(cons_f(a, z0), cons_f(cons_f(y0, y1), c))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(cons_f(y0, y1), c)))
   ENCARG(cons_f(cons_f(a, z0), cons_f(cons_f(a, y0), y1))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(cons_f(a, y0), y1)))
   ENCARG(cons_f(cons_f(a, z0), cons_f(c, a))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(c, a)))
   ENCARG(cons_f(cons_f(a, z0), cons_f(c, b))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(c, b)))
   ENCARG(cons_f(cons_f(a, z0), cons_f(c, c))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(c, c)))
   ENCARG(cons_f(cons_f(a, cons_f(c, y1)), z1)) -> c4(ENCARG(cons_f(a, cons_f(c, y1))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(y0, cons_f(c, y1)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(y0, cons_f(c, y1))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(cons_f(c, y0), y1))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(cons_f(c, y0), y1)))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, y0)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, y0))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, y0)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, y0))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(c, y0)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(c, y0))))
   ENCARG(cons_f(cons_f(a, cons_f(y0, cons_f(y1, a))), z1)) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(y1, a)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(y0, cons_f(y1, a))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(y0, cons_f(y1, a)))))
   ENCARG(cons_f(cons_f(a, cons_f(y0, cons_f(y1, b))), z1)) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(y1, b)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(y0, cons_f(y1, b))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(y0, cons_f(y1, b)))))
   ENCARG(cons_f(cons_f(a, cons_f(y0, cons_f(y1, c))), z1)) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(y1, c)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(y0, cons_f(y1, c))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(y0, cons_f(y1, c)))))
   ENCARG(cons_f(cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))
   ENCARG(cons_f(cons_f(a, cons_f(y0, cons_f(a, y1))), z1)) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(a, y1)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(y0, cons_f(a, y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(y0, cons_f(a, y1)))))
   ENCARG(cons_f(cons_f(a, cons_f(y0, cons_f(b, y1))), z1)) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(b, y1)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(y0, cons_f(b, y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(y0, cons_f(b, y1)))))
   ENCARG(cons_f(cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))), z1)) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))
   ENCARG(cons_f(cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))), z1)) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(y0, y1))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, y1)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(y0, y1)))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(y0, y1))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, y1)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(y0, y1)))))
   ENCARG(cons_f(cons_f(a, cons_f(c, cons_f(y0, y1))), z1)) -> c4(ENCARG(cons_f(a, cons_f(c, cons_f(y0, y1)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(c, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(c, cons_f(y0, y1)))))
   ENCARG(cons_f(cons_f(a, cons_f(cons_f(y0, a), y1)), z1)) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, a), y1))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(cons_f(y0, a), y1)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(cons_f(y0, a), y1))))
   ENCARG(cons_f(cons_f(a, cons_f(cons_f(y0, b), y1)), z1)) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, b), y1))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(cons_f(y0, b), y1)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(cons_f(y0, b), y1))))
   ENCARG(cons_f(cons_f(a, cons_f(cons_f(y0, c), y1)), z1)) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, c), y1))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(cons_f(y0, c), y1)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(cons_f(y0, c), y1))))
   ENCARG(cons_f(cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)), z1)) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))
   ENCARG(cons_f(cons_f(a, cons_f(cons_f(b, y0), y1)), z1)) -> c4(ENCARG(cons_f(a, cons_f(cons_f(b, y0), y1))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(cons_f(b, y0), y1)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(cons_f(b, y0), y1))))
   ENCARG(cons_f(cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)), z1)) -> c4(ENCARG(cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))
   ENCARG(cons_f(cons_f(a, cons_f(cons_f(y0, y1), a)), z1)) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, y1), a))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(cons_f(y0, y1), a)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(cons_f(y0, y1), a))))
   ENCARG(cons_f(cons_f(a, cons_f(cons_f(y0, y1), b)), z1)) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, y1), b))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(cons_f(y0, y1), b)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(cons_f(y0, y1), b))))
   ENCARG(cons_f(cons_f(a, cons_f(cons_f(y0, y1), c)), z1)) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y0, y1), c))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(cons_f(y0, y1), c)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(cons_f(y0, y1), c))))
   ENCARG(cons_f(cons_f(a, cons_f(cons_f(a, y0), y1)), z1)) -> c4(ENCARG(cons_f(a, cons_f(cons_f(a, y0), y1))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(cons_f(a, y0), y1)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(cons_f(a, y0), y1))))
   ENCARG(cons_f(cons_f(a, cons_f(c, a)), z1)) -> c4(ENCARG(cons_f(a, cons_f(c, a))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(c, a)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(c, a))))
   ENCARG(cons_f(cons_f(a, cons_f(c, b)), z1)) -> c4(ENCARG(cons_f(a, cons_f(c, b))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(c, b)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(c, b))))
   ENCARG(cons_f(cons_f(a, cons_f(c, c)), z1)) -> c4(ENCARG(cons_f(a, cons_f(c, c))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(c, c)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(c, c))))
   ENCARG(cons_f(cons_f(a, cons_f(y0, cons_f(c, y1))), z1)) -> c4(ENCARG(cons_f(a, cons_f(y0, cons_f(c, y1)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(y0, cons_f(c, y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(y0, cons_f(c, y1)))))
   ENCARG(cons_f(cons_f(a, cons_f(cons_f(c, y0), y1)), z1)) -> c4(ENCARG(cons_f(a, cons_f(cons_f(c, y0), y1))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(cons_f(c, y0), y1)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(cons_f(c, y0), y1))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, y0)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, y0))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(c, y0)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(c, y0))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(y0, cons_f(y1, a))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(y0, cons_f(y1, a)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(y0, cons_f(y1, b))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(y0, cons_f(y1, b)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(y0, cons_f(y1, c))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(y0, cons_f(y1, c)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(y0, cons_f(a, y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(y0, cons_f(a, y1)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(y0, cons_f(b, y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(y0, cons_f(b, y1)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(y0, y1)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(y0, y1)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(c, cons_f(y0, y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(c, cons_f(y0, y1)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(cons_f(y0, a), y1)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(cons_f(y0, a), y1))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(cons_f(y0, b), y1)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(cons_f(y0, b), y1))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(cons_f(y0, c), y1)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(cons_f(y0, c), y1))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(cons_f(b, y0), y1)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(cons_f(b, y0), y1))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(cons_f(y0, y1), a)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(cons_f(y0, y1), a))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(cons_f(y0, y1), b)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(cons_f(y0, y1), b))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(cons_f(y0, y1), c)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(cons_f(y0, y1), c))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(cons_f(a, y0), y1)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(cons_f(a, y0), y1))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(c, a)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(c, a))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(c, b)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(c, b))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(c, c)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(c, c))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(y0, cons_f(c, y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(y0, cons_f(c, y1)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(cons_f(c, y0), y1)))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(cons_f(c, y0), y1))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, y0))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, y0)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, y0))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, y0)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(c, y0))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(c, y0)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(c, a))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(c, a)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(c, b))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(c, b)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(c, c))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(c, c)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1)))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(a, y0))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(a, y0)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(a, y0))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(a, y0)))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(b, y0))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, y0)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(b, y0))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(b, y0)))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(c, y0))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(c, y0)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(c, y0))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(c, y0)))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, a)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, a))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, a)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, a))))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, b)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, b))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, b)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, b))))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, c)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, c))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, c)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, c))))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(y0, cons_f(a, y1)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(a, y1))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(y0, cons_f(a, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(a, y1))))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(y0, cons_f(b, y1)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(b, y1))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(y0, cons_f(b, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(b, y1))))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(a, cons_f(y0, y1)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(y0, y1))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(a, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(y0, y1))))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(b, cons_f(y0, y1)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(y0, y1))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(b, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(y0, y1))))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(c, cons_f(y0, y1)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(c, cons_f(y0, y1))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(c, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(c, cons_f(y0, y1))))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(cons_f(y0, a), y1))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, a), y1)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(cons_f(y0, a), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, a), y1)))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(cons_f(y0, b), y1))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, b), y1)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(cons_f(y0, b), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, b), y1)))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(cons_f(y0, c), y1))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, c), y1)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(cons_f(y0, c), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, c), y1)))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(cons_f(b, y0), y1))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(b, y0), y1)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(cons_f(b, y0), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(b, y0), y1)))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), a))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), a)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), a))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), a)))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), b))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), b)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), b))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), b)))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), c))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), c)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), c))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), c)))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(cons_f(a, y0), y1))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(a, y0), y1)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(cons_f(a, y0), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(a, y0), y1)))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(c, a))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(c, a)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(c, a))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(c, a)))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(c, b))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(c, b)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(c, b))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(c, b)))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(c, c))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(c, c)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(c, c))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(c, c)))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(y0, cons_f(c, y1)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(c, y1))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(y0, cons_f(c, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(c, y1))))))
   ENCARG(cons_f(cons_f(a, cons_f(a, cons_f(cons_f(c, y0), y1))), z1)) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(c, y0), y1)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(a, cons_f(cons_f(c, y0), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(c, y0), y1)))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(b, y0))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, y0)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(b, y0))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(b, y0)))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(c, y0))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(c, y0)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(c, y0))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(c, y0)))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, a)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, a))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, a)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, a))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, b)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, b))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, b)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, b))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, c)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, c))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, c)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, c))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3))))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(y0, cons_f(a, y1)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(a, y1))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(y0, cons_f(a, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(a, y1))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(y0, cons_f(b, y1)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(b, y1))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(y0, cons_f(b, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(b, y1))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, y1)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, y1))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, y1))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(b, cons_f(y0, y1)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(y0, y1))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(b, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(y0, y1))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(c, cons_f(y0, y1)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(c, cons_f(y0, y1))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(c, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(c, cons_f(y0, y1))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(cons_f(y0, a), y1))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, a), y1)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(cons_f(y0, a), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, a), y1)))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(cons_f(y0, b), y1))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, b), y1)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(cons_f(y0, b), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, b), y1)))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(cons_f(y0, c), y1))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, c), y1)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(cons_f(y0, c), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, c), y1)))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(cons_f(b, y0), y1))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(b, y0), y1)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(cons_f(b, y0), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(b, y0), y1)))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), a))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), a)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), a))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), a)))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), b))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), b)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), b))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), b)))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), c))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), c)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), c))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), c)))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(cons_f(a, y0), y1))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(a, y0), y1)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(cons_f(a, y0), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(a, y0), y1)))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(c, a))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(c, a)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(c, a))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(c, a)))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(c, b))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(c, b)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(c, b))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(c, b)))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(c, c))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(c, c)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(c, c))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(c, c)))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(y0, cons_f(c, y1)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(c, y1))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(y0, cons_f(c, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(c, y1))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(cons_f(c, y0), y1))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(c, y0), y1)))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(cons_f(c, y0), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(c, y0), y1)))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(a, y0)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, y0))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(a, y0)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, y0))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(b, y0)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, y0))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(b, y0)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, y0))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(c, y0)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, y0))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(c, y0)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, y0))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a))))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a)))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a)))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b))))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b)))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b)))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c))))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c)))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c)))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1))))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1)))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1)))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1))))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1)))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1)))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1))))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1)))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1)))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1))))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1)))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1)))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1))))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1)))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1)))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(c, a)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, a))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(c, a)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, a))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(c, b)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, b))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(c, b)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, b))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(c, c)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, c))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(c, c)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, c))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1))))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1)))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1)))))))
   ENCARG(cons_f(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1)))), z1)) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1))))), ENCARG(z1))
   ENCARG(cons_f(cons_f(a, z0), cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(b, y0))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(b, y0)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(c, y0))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(c, y0)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(y0, cons_f(y1, a)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(y1, a))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(y0, cons_f(y1, b)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(y1, b))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(y0, cons_f(y1, c)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(y1, c))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(y0, cons_f(a, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(a, y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(y0, cons_f(b, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(b, y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(b, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(b, cons_f(y0, y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(c, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(c, cons_f(y0, y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(cons_f(y0, a), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, a), y1)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(cons_f(y0, b), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, b), y1)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(cons_f(y0, c), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, c), y1)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(cons_f(b, y0), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(b, y0), y1)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(cons_f(y0, y1), a))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, y1), a)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(cons_f(y0, y1), b))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, y1), b)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(cons_f(y0, y1), c))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, y1), c)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(cons_f(a, y0), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(a, y0), y1)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(c, a))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(c, a)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(c, b))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(c, b)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(c, c))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(c, c)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(y0, cons_f(c, y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(c, y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(cons_f(c, y0), y1))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(c, y0), y1)))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(a, y0)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(a, y0))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(b, y0)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(b, y0))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(c, y0)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(c, y0))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(c, a)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(c, a))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(c, b)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(c, b))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(c, c)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(c, c))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(a, y0)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(a, y0))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(b, y0)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(b, y0))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(c, y0)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(c, y0))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, a))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, a)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, b))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, b)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, c))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, c)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(a, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(a, y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(b, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(b, y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(a, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(a, cons_f(y0, y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(b, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(b, cons_f(y0, y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(c, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(c, cons_f(y0, y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, a), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, a), y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, b), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, b), y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, c), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, c), y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(b, y0), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(b, y0), y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), a)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), a))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), b)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), b))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), c)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), c))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(a, y0), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(a, y0), y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(c, a)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(c, a))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(c, b)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(c, b))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(c, c)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(c, c))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(c, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(c, y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(c, y0), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(c, y0), y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(b, y0)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(b, y0))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(c, y0)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(c, y0))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, a))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, a)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, b))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, b)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, c))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, c)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(a, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(a, y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(b, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(b, y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(b, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(b, cons_f(y0, y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(c, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(c, cons_f(y0, y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, a), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, a), y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, b), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, b), y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, c), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, c), y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(b, y0), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(b, y0), y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), a)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), a))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), b)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), b))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), c)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), c))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(a, y0), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(a, y0), y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(c, a)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(c, a))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(c, b)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(c, b))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(c, c)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(c, c))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(c, y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(c, y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(c, y0), y1)))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(c, y0), y1))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(a, y0))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(a, y0)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(b, y0))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(b, y0)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, y0))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, y0)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a)))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a))))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b)))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b))))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c)))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c))))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1)))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1))))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1)))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1))))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1)))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1))))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1)))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1))))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1)))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1))))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, a))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, a)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, b))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, b)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, c))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, c)))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1)))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1))))))))
   ENCARG(cons_f(cons_f(a, z0), cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1))))))) -> c4(ENCARG(cons_f(a, z0)), ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(y1, a)))) -> c4(ENCARG(cons_f(a, cons_f(y1, a))))
   ENCARG(cons_f(a, cons_f(a, cons_f(y1, b)))) -> c4(ENCARG(cons_f(a, cons_f(y1, b))))
   ENCARG(cons_f(a, cons_f(a, cons_f(y1, c)))) -> c4(ENCARG(cons_f(a, cons_f(y1, c))))
   ENCARG(cons_f(a, cons_f(a, cons_f(y1, cons_f(y2, y3))))) -> c4(ENCARG(cons_f(a, cons_f(y1, cons_f(y2, y3)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y1, y2), y3)))) -> c4(ENCARG(cons_f(a, cons_f(cons_f(y1, y2), y3))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(a, y0))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(a, y0)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, y0))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, y0)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(c, y0))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(c, y0)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, a)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, a))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, b)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, b))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, c)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, c))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(y0, cons_f(a, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(a, y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(y0, cons_f(b, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(b, y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(a, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(y0, y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(y0, y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(c, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(c, cons_f(y0, y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(y0, a), y1))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, a), y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(y0, b), y1))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, b), y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(y0, c), y1))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, c), y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(b, y0), y1))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(b, y0), y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), a))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), a)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), b))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), b)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), c))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), c)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(a, y0), y1))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(a, y0), y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(c, a))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(c, a)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(c, b))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(c, b)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(c, c))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(c, c)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(y0, cons_f(c, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(c, y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(c, y0), y1))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(c, y0), y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, y0))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, y0)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(c, y0))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(c, y0)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, a)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, a))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, b)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, b))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, c)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, c))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(y0, cons_f(a, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(a, y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(y0, cons_f(b, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(b, y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(y0, y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(c, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(c, cons_f(y0, y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(y0, a), y1))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, a), y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(y0, b), y1))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, b), y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(y0, c), y1))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, c), y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(b, y0), y1))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(b, y0), y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), a))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), a)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), b))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), b)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), c))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), c)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(a, y0), y1))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(a, y0), y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(c, a))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(c, a)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(c, b))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(c, b)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(c, c))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(c, c)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(y0, cons_f(c, y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(c, y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(c, y0), y1))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(c, y0), y1)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(a, y0)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, y0))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, y0)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, y0))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(c, y0)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, y0))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(c, a)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, a))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(c, b)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, b))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(c, c)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(c, c))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(y1, a)))) -> c4(ENCARG(cons_f(b, cons_f(y1, a))))
   ENCARG(cons_f(a, cons_f(b, cons_f(y1, b)))) -> c4(ENCARG(cons_f(b, cons_f(y1, b))))
   ENCARG(cons_f(a, cons_f(b, cons_f(y1, c)))) -> c4(ENCARG(cons_f(b, cons_f(y1, c))))
   ENCARG(cons_f(a, cons_f(b, cons_f(y1, cons_f(y2, y3))))) -> c4(ENCARG(cons_f(b, cons_f(y1, cons_f(y2, y3)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, y1)))) -> c4(ENCARG(cons_f(b, cons_f(a, y1))))
   ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y1, y2), y3)))) -> c4(ENCARG(cons_f(b, cons_f(cons_f(y1, y2), y3))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(b, y0))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(b, y0)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(c, y0))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(c, y0)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(y0, cons_f(y1, a)))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(y1, a))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(y0, cons_f(y1, b)))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(y1, b))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(y0, cons_f(y1, c)))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(y1, c))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(y0, cons_f(a, y1)))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(a, y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(y0, cons_f(b, y1)))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(b, y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(b, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(b, cons_f(y0, y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(c, cons_f(y0, y1)))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(c, cons_f(y0, y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(cons_f(y0, a), y1))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, a), y1)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(cons_f(y0, b), y1))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, b), y1)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(cons_f(y0, c), y1))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, c), y1)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(cons_f(b, y0), y1))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(b, y0), y1)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(cons_f(y0, y1), a))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, y1), a)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(cons_f(y0, y1), b))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, y1), b)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(cons_f(y0, y1), c))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(y0, y1), c)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(cons_f(a, y0), y1))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(a, y0), y1)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(c, a))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(c, a)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(c, b))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(c, b)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(c, c))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(c, c)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(y0, cons_f(c, y1)))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(y0, cons_f(c, y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(cons_f(c, y0), y1))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(cons_f(c, y0), y1)))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(a, y0)))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(a, y0))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(b, y0)))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(b, y0))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(c, y0)))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(c, y0))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a))))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b))))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c))))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1))))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1))))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1)))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1)))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1)))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1)))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a)))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b)))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c)))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1)))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(c, a)))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(c, a))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(c, b)))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(c, b))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(c, c)))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(c, c))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1))))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1)))))) -> c4(ENCARG(cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(a, y0)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(a, y0))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(b, y0)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(b, y0))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(c, y0)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(c, y0))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, a))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, a)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, b))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, b)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, c))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, c)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(a, y1))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(a, y1)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(b, y1))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(b, y1)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(a, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(a, cons_f(y0, y1)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(b, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(b, cons_f(y0, y1)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(c, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(c, cons_f(y0, y1)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, a), y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, a), y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, b), y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, b), y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, c), y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, c), y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(b, y0), y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(b, y0), y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), a)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), a))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), b)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), b))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), c)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), c))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(a, y0), y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(a, y0), y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(c, a)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(c, a))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(c, b)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(c, b))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(c, c)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(c, c))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(c, y1))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(c, y1)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(c, y0), y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(c, y0), y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(b, y0)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(b, y0))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(c, y0)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(c, y0))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, a))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, a)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, b))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, b)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, c))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, c)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(a, y1))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(a, y1)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(b, y1))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(b, y1)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, y1)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(b, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(b, cons_f(y0, y1)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(c, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(c, cons_f(y0, y1)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, a), y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, a), y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, b), y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, b), y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, c), y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, c), y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(b, y0), y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(b, y0), y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), a)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), a))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), b)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), b))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), c)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), c))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(a, y0), y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(a, y0), y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(c, a)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(c, a))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(c, b)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(c, b))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(c, c)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(c, c))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(c, y1))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(c, y1)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(c, y0), y1)))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(c, y0), y1))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(a, y0))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(a, y0)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(b, y0))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(b, y0)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, y0))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, y0)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a)))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a))))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b)))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b))))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c)))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c))))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1)))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1))))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1)))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1))))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1)))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1))))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1)))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1))))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1)))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1))))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, a))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, a)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, b))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, b)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, c))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, c)))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1)))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1))))))))
   ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1))))))) -> c4(ENCARG(cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(y0, a))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, a)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(y0, b))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, b)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(y0, c))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, c)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, y2)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, y2))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), y2))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), y2)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(a, cons_f(a, y0)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(a, y0))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(a, cons_f(b, y0)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, y0))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(a, cons_f(c, y0)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(c, y0))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, a))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, a)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, b))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, b)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, c))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, c)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(a, cons_f(y0, cons_f(a, y1))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(y0, cons_f(a, y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(a, cons_f(y0, cons_f(b, y1))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(y0, cons_f(b, y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(a, cons_f(a, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(a, cons_f(y0, y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(y0, y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(a, cons_f(c, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(c, cons_f(y0, y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(y0, a), y1)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(y0, a), y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(y0, b), y1)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(y0, b), y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(y0, c), y1)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(y0, c), y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(b, y0), y1)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(b, y0), y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), a)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), a))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), b)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), b))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), c)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), c))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(a, y0), y1)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(a, y0), y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(a, cons_f(c, a)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(c, a))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(a, cons_f(c, b)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(c, b))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(a, cons_f(c, c)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(c, c))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(a, cons_f(y0, cons_f(c, y1))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(y0, cons_f(c, y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(c, y0), y1)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(cons_f(c, y0), y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(b, y0)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, y0))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(c, y0)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(c, y0))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, a))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, a)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, b))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, b)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, c))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, c)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(y0, cons_f(a, y1))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(y0, cons_f(a, y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(y0, cons_f(b, y1))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(y0, cons_f(b, y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(y0, y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(c, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(c, cons_f(y0, y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(y0, a), y1)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(y0, a), y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(y0, b), y1)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(y0, b), y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(y0, c), y1)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(y0, c), y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(b, y0), y1)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(b, y0), y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), a)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), a))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), b)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), b))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), c)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), c))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(a, y0), y1)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(a, y0), y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(c, a)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(c, a))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(c, b)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(c, b))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(c, c)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(c, c))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(y0, cons_f(c, y1))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(y0, cons_f(c, y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(c, y0), y1)))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(c, y0), y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(a, y0))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(a, y0)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, y0))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, y0)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(c, y0))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(c, y0)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a)))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b)))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c)))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1)))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1)))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1)))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1)))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1)))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(c, a))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(c, a)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(c, b))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(c, b)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(c, c))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(c, c)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1)))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1))))))) -> c4(ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(y0, a))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, a)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(y0, b))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, b)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(y0, c))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, c)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, y2)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, y2))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, y0))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, y0)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), y2))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), y2)))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(b, y0)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(b, y0))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(c, y0)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(c, y0))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(y0, cons_f(y1, a))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(y0, cons_f(y1, a)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(y0, cons_f(y1, b))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(y0, cons_f(y1, b)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(y0, cons_f(y1, c))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(y0, cons_f(y1, c)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(y0, cons_f(a, y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(y0, cons_f(a, y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(y0, cons_f(b, y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(y0, cons_f(b, y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(y0, y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(b, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(b, cons_f(y0, y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(c, cons_f(y0, y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(c, cons_f(y0, y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(cons_f(y0, a), y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(cons_f(y0, a), y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(cons_f(y0, b), y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(cons_f(y0, b), y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(cons_f(y0, c), y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(cons_f(y0, c), y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(cons_f(b, y0), y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(cons_f(b, y0), y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(cons_f(y0, y1), a)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(cons_f(y0, y1), a))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(cons_f(y0, y1), b)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(cons_f(y0, y1), b))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(cons_f(y0, y1), c)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(cons_f(y0, y1), c))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(cons_f(a, y0), y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(cons_f(a, y0), y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(c, a)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(c, a))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(c, b)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(c, b))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(c, c)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(c, c))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(y0, cons_f(c, y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(y0, cons_f(c, y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(cons_f(c, y0), y1)))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(cons_f(c, y0), y1))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(a, y0))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(a, y0)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(b, y0))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(b, y0)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(c, y0))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(c, y0)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(c, a))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(c, a)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(c, b))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(c, b)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(c, c))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(c, c)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(a, y0))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(a, y0)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(b, y0))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(b, y0)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(c, y0))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(c, y0)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, a)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, a))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, b)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, b))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, c)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, c))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(a, y1)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(a, y1))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(b, y1)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(b, y1))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(a, cons_f(y0, y1)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(a, cons_f(y0, y1))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(b, cons_f(y0, y1)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(b, cons_f(y0, y1))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(c, cons_f(y0, y1)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(c, cons_f(y0, y1))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, a), y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, a), y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, b), y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, b), y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, c), y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, c), y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(b, y0), y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(b, y0), y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), a))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), a)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), b))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), b)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), c))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(y0, y1), c)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(a, y0), y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(a, y0), y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(c, a))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(c, a)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(c, b))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(c, b)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(c, c))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(c, c)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(c, y1)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, cons_f(c, y1))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(c, y0), y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(cons_f(c, y0), y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(b, y0))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(b, y0)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(c, y0))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(c, y0)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, a)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, a))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, b)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, b))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, c)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, c))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(a, y1)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(a, y1))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(b, y1)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(b, y1))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, y1)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, y1))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(b, cons_f(y0, y1)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(b, cons_f(y0, y1))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(c, cons_f(y0, y1)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(c, cons_f(y0, y1))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, a), y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, a), y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, b), y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, b), y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, c), y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, c), y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(b, y0), y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(b, y0), y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), a))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), a)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), b))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), b)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), c))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(y0, y1), c)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(a, y0), y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(a, y0), y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(c, a))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(c, a)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(c, b))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(c, b)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(c, c))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(c, c)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(c, y1)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, cons_f(c, y1))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(c, y0), y1))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(cons_f(c, y0), y1)))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(a, y0)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(a, y0))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(b, y0)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(b, y0))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, y0)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, y0))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a))))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, a)))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b))))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, b)))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c))))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, c)))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3)))))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(y1, cons_f(y2, y3))))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1))))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(a, y1)))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1))))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(b, y1)))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3))))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(cons_f(y1, y2), y3)))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3))))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), cons_f(y2, y3)))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1))))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(a, cons_f(y0, y1)))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1))))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(y0, y1)))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1))))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, cons_f(y0, y1)))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, a), y1))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, b), y1))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, c), y1))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, cons_f(y1, y2)), y3))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(b, y0), y1))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(cons_f(y0, y1), y2), y3))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), a))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), b))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(y0, y1), c))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(a, y0), y1))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, a)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, a))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, b)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, b))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, c)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(c, c))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1))))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(y0, cons_f(c, y1)))))))))
   ENCARG(cons_f(a, cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1)))))))) -> c4(ENCARG(cons_f(a, cons_f(b, cons_f(a, cons_f(b, cons_f(a, cons_f(cons_f(c, y0), y1))))))))
S tuples:
   F(f(f(a, z0), z1), z2) -> c9(F(f(z0, z2), f(z1, z2)), F(z0, z2), F(z1, z2))
   F(f(b, z0), z1) -> c10
   F(c, z0) -> c11
K tuples:none
Defined Rule Symbols:   encArg_1, f_2

Defined Pair Symbols:   F_2, ENCARG_1, ENCODE_F_2

Compound Symbols:   c9_3, c10, c11, c4_2, c1_1, c4_3, c4_1