Termination of the given GTRS could not be shown:

(0) Obligation:

Generalized rewrite system (where rules with free variables on rhs are allowed):
The TRS R consists of the following rules:

2nd(cons(X)) → head(XS)
sel(s(N), cons(X)) → sel(N, XS)
from(X) → cons(X)
head(cons(X)) → X
take(0, XS) → nil
take(s(N), cons(X)) → cons(X)
sel(0, cons(X)) → X