MAYBE
MAYBE
TRS:
 {
                from(X) -> cons(X, from(s(X))),
  sel(s(X), cons(Y, Z)) -> sel(X, Z),
   sel(0(), cons(X, Y)) -> X
 }
 DUP: We consider a duplicating system.
  Trs:
   {
                  from(X) -> cons(X, from(s(X))),
    sel(s(X), cons(Y, Z)) -> sel(X, Z),
     sel(0(), cons(X, Y)) -> X
   }
  Fail