U11
tt
N
XS
U12
tt
activate
N
activate
XS
U12
tt
N
XS
snd
splitAt
activate
N
activate
XS
U21
tt
X
U22
tt
activate
X
U22
tt
X
activate
X
U31
tt
N
U32
tt
activate
N
U32
tt
N
activate
N
U41
tt
N
XS
U42
tt
activate
N
activate
XS
U42
tt
N
XS
head
afterNth
activate
N
activate
XS
U51
tt
Y
U52
tt
activate
Y
U52
tt
Y
activate
Y
U61
tt
N
X
XS
U62
tt
activate
N
activate
X
activate
XS
U62
tt
N
X
XS
U63
tt
activate
N
activate
X
activate
XS
U63
tt
N
X
XS
U64
splitAt
activate
N
activate
XS
activate
X
U64
pair
YS
ZS
X
pair
cons
activate
X
YS
ZS
U71
tt
XS
U72
tt
activate
XS
U72
tt
XS
activate
XS
U81
tt
N
XS
U82
tt
activate
N
activate
XS
U82
tt
N
XS
fst
splitAt
activate
N
activate
XS
afterNth
N
XS
U11
tt
N
XS
fst
pair
X
Y
U21
tt
X
head
cons
N
XS
U31
tt
N
natsFrom
N
cons
N
n__natsFrom
s
N
sel
N
XS
U41
tt
N
XS
snd
pair
X
Y
U51
tt
Y
splitAt
0
XS
pair
nil
XS
splitAt
s
N
cons
X
XS
U61
tt
N
X
activate
XS
tail
cons
N
XS
U71
tt
activate
XS
take
N
XS
U81
tt
N
XS
natsFrom
X
n__natsFrom
X
activate
n__natsFrom
X
natsFrom
X
activate
X
X
U11
3
tt
0
U12
3
activate
1
snd
1
splitAt
2
U21
2
U22
2
U31
2
U32
2
U41
3
U42
3
head
1
afterNth
2
U51
2
U52
2
U61
4
U62
4
U63
4
U64
2
pair
2
cons
2
U71
2
U72
2
U81
3
U82
3
fst
1
natsFrom
1
n__natsFrom
1
s
1
sel
2
0
0
nil
0
tail
1
take
2
INNERMOST
./TRS/TRCSR/LISTUTILITIES_nosorts-noand_Z.trs