MAYBE
(ignored inputs)COMMENT submitted by: Johannes Waldmann
input TRS:
   [ c(a(?x)) -> c(b(?x)),
     b(a(?x)) -> c(a(?x)),
     b(c(?x)) -> b(a(?x)),
     c(b(?x)) -> b(c(?x)),
     b(c(?x)) -> b(a(?x)),
     c(b(?x)) -> c(a(?x)),
     b(a(?x)) -> c(b(?x)),
     b(b(?x)) -> c(c(?x)) ]
TRS:
   [ c(a(?x)) -> c(b(?x)),
     b(a(?x)) -> c(a(?x)),
     b(c(?x)) -> b(a(?x)),
     c(b(?x)) -> b(c(?x)),
     b(c(?x)) -> b(a(?x)),
     c(b(?x)) -> c(a(?x)),
     b(a(?x)) -> c(b(?x)),
     b(b(?x)) -> c(c(?x)) ]
unknown UNC Completion (Strongly Closed)
problems/1018.trs: Failure(unknown UNC)
(44 msec.)