0.00/0.34 NO 0.00/0.34 0.00/0.34 0.00/0.34 The system was reversed. 0.00/0.34 0.00/0.34 Remains to prove termination of the 3-rule system 0.00/0.34 { a -> b , 0.00/0.34 c a -> , 0.00/0.34 b b c -> c c a a a } 0.00/0.34 0.00/0.34 0.00/0.34 Loop of length 12 starting with a string of length 6 using right expansion 0.00/0.34 and the encoding {a=a, b=b, c=c}: 0.00/0.34 0.00/0.34 .a.bcbcc 0.00/0.34 rule a -> b at position 0 0.00/0.34 .b.bcbcc 0.00/0.34 rule bbc -> ccaaa at position 0 0.00/0.34 .ccaaa.bcc 0.00/0.34 rule a -> b at position 2 0.00/0.34 .ccbaa.bcc 0.00/0.34 rule a -> b at position 3 0.00/0.34 .ccbba.bcc 0.00/0.34 rule a -> b at position 4 0.00/0.34 .ccbbb.bcc 0.00/0.34 rule bbc -> ccaaa at position 4 0.00/0.34 .ccbbccaaa.c 0.00/0.34 rule bbc -> ccaaa at position 2 0.00/0.34 .ccccaaacaaa.c 0.00/0.34 rule a -> b at position 6 0.00/0.34 .ccccaabcaaa.c 0.00/0.34 rule a -> b at position 8 0.00/0.34 .ccccaabcbaa.c 0.00/0.34 rule a -> b at position 9 0.00/0.34 .ccccaabcbba.c 0.00/0.34 rule a -> b at position 10 0.00/0.34 .ccccaabcbbb.c 0.00/0.34 rule bbc -> ccaaa at position 9 0.00/0.34 .ccccaabcbccaaa. 0.00/0.38 EOF