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