Loop of length 20 starting with a string of length 11
found after enumerating 48179 derivations:

.a.abcabccbcc
	rule a -> b at position 0
.b.abcabccbcc
	rule babc -> bccaaa at position 0
.bccaaa.abccbcc
	rule a -> b at position 3
.bccbaa.abccbcc
	rule a -> b at position 5
.bccbab.abccbcc
	rule babc -> bccaaa at position 5
.bccbabccaaa.cbcc
	rule babc -> bccaaa at position 3
.bccbccaaacaaa.cbcc
	rule a -> b at position 6
.bccbccbaacaaa.cbcc
	rule a -> b at position 8
.bccbccbabcaaa.cbcc
	rule babc -> bccaaa at position 6
.bccbccbccaaaaaa.cbcc
	rule a -> b at position 10
.bccbccbccabaaaa.cbcc
	rule a -> b at position 12
.bccbccbccababaa.cbcc
	rule a -> b at position 14
.bccbccbccababab.cbcc
	rule babc -> bccaaa at position 12
.bccbccbccababccaaa.bcc
	rule babc -> bccaaa at position 10
.bccbccbccabccaaacaaa.bcc
	rule a -> b at position 15
.bccbccbccabccaabcaaa.bcc
	rule a -> b at position 18
.bccbccbccabccaabcaba.bcc
	rule babc -> bccaaa at position 18
.bccbccbccabccaabcabccaaa.c
	rule a -> b at position 21
.bccbccbccabccaabcabccbaa.c
	rule a -> b at position 23
.bccbccbccabccaabcabccbab.c
	rule babc -> bccaaa at position 21
.bccbccbccabccaabcabccbccaaa.