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