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