MAYBE
MAYBE
TRS:
 {
                   from(X) -> cons(X, n__from(s(X))),
                   from(X) -> n__from(X),
  after(s(N), cons(X, XS)) -> after(N, activate(XS)),
            after(0(), XS) -> XS,
               activate(X) -> X,
      activate(n__from(X)) -> from(X)
 }
 DUP: We consider a duplicating system.
  Trs:
   {
                     from(X) -> cons(X, n__from(s(X))),
                     from(X) -> n__from(X),
    after(s(N), cons(X, XS)) -> after(N, activate(XS)),
              after(0(), XS) -> XS,
                 activate(X) -> X,
        activate(n__from(X)) -> from(X)
   }
  Fail