MAYBE
MAYBE
TRS:
 {
             from(X) -> cons(X, from(s(X))),
  length(cons(X, Y)) -> s(length1(Y)),
       length(nil()) -> 0(),
          length1(X) -> length(X)
 }
 DUP: We consider a duplicating system.
  Trs:
   {
               from(X) -> cons(X, from(s(X))),
    length(cons(X, Y)) -> s(length1(Y)),
         length(nil()) -> 0(),
            length1(X) -> length(X)
   }
  Fail