Loop of length 12 starting with a string of length 10 found after enumerating 16854 derivations: .cbaa.aaaaaa rule cbaa -> aaaccb at position 0 .aaaccb.aaaaaa rule cbaa -> aaaccb at position 4 .aaacaaaccb.aaaa rule a -> b at position 4 .aaacbaaccb.aaaa rule cbaa -> aaaccb at position 8 .aaacbaacaaaccb.aa rule a -> b at position 8 .aaacbaacbaaccb.aa rule cbaa -> aaaccb at position 7 .aaacbaaaaaccbccb.aa rule cbaa -> aaaccb at position 14 .aaacbaaaaaccbcaaaccb. rule a -> b at position 14 .aaacbaaaaaccbcbaaccb. rule cbaa -> aaaccb at position 13 .aaacbaaaaaccbaaaccbccb. rule cbaa -> aaaccb at position 11 .aaacbaaaaacaaaccbaccbccb. rule a -> b at position 11 .aaacbaaaaacbaaccbaccbccb. rule cbaa -> aaaccb at position 10 .aaacbaaaaaaaaccbccbaccbccb.