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