MAYBE (ignored inputs)COMMENT from experiments for [44] submitted by: Tsubasa Suzuki , Takahito Aoto , and Yoshihito Toyama input TRS: [ a -> h(c), a -> f(c), f(?x) -> h(g(?x)), h(?x) -> f(k(?x)) ] TRS: [ a -> h(c), a -> f(c), f(?x) -> h(g(?x)), h(?x) -> f(k(?x)) ] Check distinct normal forms in critical pair closure...failed problems/252.trs: Failure(unknown UNC) (4 msec.)