MAYBE

Problem:
 f(x,f(a(),f(f(a(),a()),a()))) -> f(f(a(),x),x)

Proof:
 DP Processor:
  DPs:
   f#(x,f(a(),f(f(a(),a()),a()))) -> f#(a(),x)
   f#(x,f(a(),f(f(a(),a()),a()))) -> f#(f(a(),x),x)
  TRS:
   f(x,f(a(),f(f(a(),a()),a()))) -> f(f(a(),x),x)
  Open