MAYBE
(ignored inputs)COMMENT submitted by: Johannes Waldmann
Rewrite Rules:
   [ f(f(?x,a),a) -> f(f(f(f(a,f(a,?x)),a),a),a) ]
Apply Direct Methods...
Inner CPs:
   [ f(f(f(f(f(a,f(a,?x)),a),a),a),a) = f(f(f(f(a,f(a,f(?x,a))),a),a),a) ]
Outer CPs:
   [  ]
Linear
(inner) Parallel CPs: (not computed)
unknown Toyama (Parallel CPs)
Direct Methods: Can't judge

Combined result: Can't judge
1152.trs: Failure(unknown CR)
(0 msec.)