Loop of length 10 starting with a string of length 9
found after enumerating 2131 derivations:

.bcc.bbbcbb
	rule bcc -> a at position 0
.a.bbbcbb
	rule ab -> bbca at position 0
.bbca.bbcbb
	rule ab -> bbca at position 3
.bbcbbca.bcbb
	rule b ->  at position 3
.bbcbca.bcbb
	rule b ->  at position 3
.bbcca.bcbb
	rule ab -> bbca at position 4
.bbccbbca.cbb
	rule a ->  at position 7
.bbccbbc.cbb
	rule bcc -> a at position 5
.bbccba.bb
	rule ab -> bbca at position 5
.bbccbbbca.b
	rule ab -> bbca at position 8
.bbccbbbcbbca.