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