dbl
0
0
dbl
s
X
s
n__s
n__dbl
activate
X
dbls
nil
nil
dbls
cons
X
Y
cons
n__dbl
activate
X
n__dbls
activate
Y
sel
0
cons
X
Y
activate
X
sel
s
X
cons
Y
Z
sel
activate
X
activate
Z
indx
nil
X
nil
indx
cons
X
Y
Z
cons
n__sel
activate
X
activate
Z
n__indx
activate
Y
activate
Z
from
X
cons
activate
X
n__from
n__s
activate
X
s
X
n__s
X
dbl
X
n__dbl
X
dbls
X
n__dbls
X
sel
X1
X2
n__sel
X1
X2
indx
X1
X2
n__indx
X1
X2
from
X
n__from
X
activate
n__s
X
s
X
activate
n__dbl
X
dbl
X
activate
n__dbls
X
dbls
X
activate
n__sel
X1
X2
sel
X1
X2
activate
n__indx
X1
X2
indx
X1
X2
activate
n__from
X
from
X
activate
X
X
dbl
1
0
0
s
1
n__s
1
n__dbl
1
activate
1
dbls
1
nil
0
cons
2
n__dbls
1
sel
2
indx
2
n__sel
2
n__indx
2
from
1
n__from
1
FULL
./TRS/TRCSR/Ex3_2_Luc97_Z.trs