0.00/0.34 NO 0.00/0.35 0.00/0.35 0.00/0.35 The system was reversed. 0.00/0.35 0.00/0.35 Remains to prove termination of the 4-rule system 0.00/0.35 { a -> , 0.00/0.35 b a -> a c a a b b , 0.00/0.35 b -> , 0.00/0.35 c c -> } 0.00/0.35 0.00/0.35 0.00/0.35 Loop of length 8 starting with a string of length 4 using right expansion 0.00/0.35 and the encoding {a=a, b=b, c=c}: 0.00/0.35 0.00/0.35 .ba.aa 0.00/0.35 rule ba -> acaabb at position 0 0.00/0.35 .acaabb.aa 0.00/0.35 rule ba -> acaabb at position 5 0.00/0.35 .acaabacaabb.a 0.00/0.35 rule a -> at position 7 0.00/0.35 .acaabacabb.a 0.00/0.35 rule a -> at position 7 0.00/0.35 .acaabacbb.a 0.00/0.35 rule ba -> acaabb at position 8 0.00/0.35 .acaabacbacaabb. 0.00/0.35 rule ba -> acaabb at position 7 0.00/0.35 .acaabacacaabbcaabb. 0.00/0.35 rule a -> at position 7 0.00/0.35 .acaabaccaabbcaabb. 0.00/0.35 rule cc -> at position 6 0.00/0.35 .acaabaaabbcaabb. 0.00/0.43 EOF