MAYBE
MAYBE
TRS:
 {f(x, c(y)) -> f(x, s(f(y, y))),
  f(s(x), y) -> f(x, s(c(y)))}
 DUP: We consider a duplicating system.
  Trs:
   {f(x, c(y)) -> f(x, s(f(y, y))),
    f(s(x), y) -> f(x, s(c(y)))}
  Fail