(GOAL COMPLEXITY)
(STARTTERM (FUNCTIONSYMBOLS f28))
(VAR A B C D E)
(RULES
  f12(A,B,C,D,E) -> Com_1(f11(A,B,C,D,E))
  f28(A,B,C,D,E) -> Com_1(f20(A,1,A,1,A)) :|: A >= 1
)