zeros
cons
0
n__zeros
and
tt
X
activate
X
length
nil
0
length
cons
N
L
s
length
activate
L
take
0
IL
nil
take
s
M
cons
N
IL
cons
N
n__take
M
activate
IL
zeros
n__zeros
take
X1
X2
n__take
X1
X2
activate
n__zeros
zeros
activate
n__take
X1
X2
take
activate
X1
activate
X2
activate
X
X
2.2
take
s
M
cons
N
IL
activate
IL
activate
n__take
X1
X2
activate
X2
length
cons
N
L
length
activate
L
activate
n__take
X1
X2
activate
X1
activate
n__zeros
zeros
and
tt
X
activate
X
length
cons
N
L
activate
L
activate
n__take
X1
X2
take
activate
X1
activate
X2
true
and
tt
X
activate
X
false
length
cons
N
L
length
activate
L
true
Failed!
NaTT
certifiable-1.6