MAYBE
(ignored inputs)COMMENT doi:10.1007/11805618_6 [7] Example 3 submitted by: Takahito Aoto , Junichi Yoshida , and Yoshihito Toyama
input TRS:
   [ b -> a,
     b -> c,
     c -> h(b),
     c -> d,
     a -> h(a),
     d -> h(d) ]
TRS:
   [ b -> a,
     b -> c,
     c -> h(b),
     c -> d,
     a -> h(a),
     d -> h(d) ]
Check distinct normal forms in critical pair closure...failed
problems/21.trs: Failure(unknown UNC)
(4 msec.)