0.00/0.26 NO 0.00/0.26 0.00/0.26 0.00/0.26 The system was reversed. 0.00/0.26 0.00/0.26 Remains to prove termination of the 3-rule system 0.00/0.26 { a -> , 0.00/0.26 b a -> a a b c a b , 0.00/0.26 c b c -> } 0.00/0.26 0.00/0.26 0.00/0.26 Loop of length 7 starting with a string of length 4 using right expansion 0.00/0.26 and the encoding {a=a, b=b, c=c}: 0.00/0.26 0.00/0.26 .ba.aa 0.00/0.26 rule ba -> aabcab at position 0 0.00/0.26 .aabcab.aa 0.00/0.26 rule a -> at position 4 0.00/0.26 .aabcb.aa 0.00/0.26 rule ba -> aabcab at position 4 0.00/0.26 .aabcaabcab.a 0.00/0.26 rule a -> at position 4 0.00/0.26 .aabcabcab.a 0.00/0.26 rule a -> at position 4 0.00/0.26 .aabcbcab.a 0.00/0.26 rule cbc -> at position 3 0.00/0.26 .aabab.a 0.00/0.26 rule ba -> aabcab at position 4 0.00/0.26 .aabaaabcab. 0.00/0.29 EOF