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