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