MAYBE
TRS:
 {f(x, h(y)) -> h(f(f(h(a()), y), x))}
 DP:
  Strict:
   {f#(x, h(y)) -> f#(h(a()), y),
    f#(x, h(y)) -> f#(f(h(a()), y), x)}
  Weak:
  {f(x, h(y)) -> h(f(f(h(a()), y), x))}
  EDG:
   {(f#(x, h(y)) -> f#(h(a()), y), f#(x, h(y)) -> f#(f(h(a()), y), x))
    (f#(x, h(y)) -> f#(h(a()), y), f#(x, h(y)) -> f#(h(a()), y))
    (f#(x, h(y)) -> f#(f(h(a()), y), x), f#(x, h(y)) -> f#(h(a()), y))
    (f#(x, h(y)) -> f#(f(h(a()), y), x), f#(x, h(y)) -> f#(f(h(a()), y), x))}
   SCCS:
    Scc:
     {f#(x, h(y)) -> f#(h(a()), y),
      f#(x, h(y)) -> f#(f(h(a()), y), x)}
    SCC:
     Strict:
      {f#(x, h(y)) -> f#(h(a()), y),
       f#(x, h(y)) -> f#(f(h(a()), y), x)}
     Weak:
     {f(x, h(y)) -> h(f(f(h(a()), y), x))}
     Fail