0.00/0.26 NO 0.00/0.27 0.00/0.27 0.00/0.27 The system was reversed. 0.00/0.27 0.00/0.27 Remains to prove termination of the 3-rule system 0.00/0.27 { a -> , 0.00/0.27 b a -> a a c a b c b , 0.00/0.27 c c -> } 0.00/0.27 0.00/0.27 0.00/0.27 Loop of length 10 starting with a string of length 4 using right expansion 0.00/0.27 and the encoding {a=a, b=b, c=c}: 0.00/0.27 0.00/0.27 .ba.aa 0.00/0.27 rule ba -> aacabcb at position 0 0.00/0.27 .aacabcb.aa 0.00/0.27 rule ba -> aacabcb at position 6 0.00/0.27 .aacabcaacabcb.a 0.00/0.27 rule a -> at position 6 0.00/0.27 .aacabcacabcb.a 0.00/0.27 rule a -> at position 6 0.00/0.27 .aacabccabcb.a 0.00/0.27 rule cc -> at position 5 0.00/0.27 .aacababcb.a 0.00/0.27 rule ba -> aacabcb at position 8 0.00/0.27 .aacababcaacabcb. 0.00/0.27 rule a -> at position 8 0.00/0.27 .aacababcacabcb. 0.00/0.27 rule a -> at position 8 0.00/0.27 .aacababccabcb. 0.00/0.27 rule cc -> at position 7 0.00/0.27 .aacabababcb. 0.00/0.27 rule ba -> aacabcb at position 6 0.00/0.27 .aacabaaacabcbbcb. 0.00/0.31 EOF