MAYBE
(ignored inputs)COMMENT submitted by: Akihisa Yamada used by COPS #1278
Rewrite Rules:
   [ f(g(h(?x))) -> g(f(h(g(?x)))),
     f(?x) -> ?x,
     g(?x) -> ?x,
     h(?x) -> ?x ]
Apply Direct Methods...
Inner CPs:
   [ f(h(?x)) = g(f(h(g(?x)))),
     f(g(?x_3)) = g(f(h(g(?x_3)))) ]
Outer CPs:
   [ g(f(h(g(?x)))) = g(h(?x)) ]
Linear
(inner) Parallel CPs: (not computed)
unknown Toyama (Parallel CPs)
Direct Methods: Can't judge

Combined result: Can't judge
1651.trs: Failure(unknown CR)
(0 msec.)