Loop of length 24 starting with a string of length 8
found after enumerating 1477168 derivations:

.ab.bbbbbb
	rule ab -> bbaca at position 0
.bbaca.bbbbbb
	rule ab -> bbaca at position 4
.bbacbbaca.bbbbb
	rule b ->  at position 4
.bbacbaca.bbbbb
	rule b ->  at position 4
.bbacaca.bbbbb
	rule a ->  at position 4
.bbacca.bbbbb
	rule ab -> bbaca at position 5
.bbaccbbaca.bbbb
	rule ccb ->  at position 3
.bbabaca.bbbb
	rule ab -> bbaca at position 6
.bbabacbbaca.bbb
	rule b ->  at position 6
.bbabacbaca.bbb
	rule b ->  at position 6
.bbabacaca.bbb
	rule a ->  at position 6
.bbabacca.bbb
	rule ab -> bbaca at position 7
.bbabaccbbaca.bb
	rule ccb ->  at position 5
.bbababaca.bb
	rule ab -> bbaca at position 4
.bbabbbacaaca.bb
	rule a ->  at position 8
.bbabbbacaca.bb
	rule a ->  at position 8
.bbabbbacca.bb
	rule ab -> bbaca at position 9
.bbabbbaccbbaca.b
	rule ccb ->  at position 7
.bbabbbabaca.b
	rule ab -> bbaca at position 6
.bbabbbbbacaaca.b
	rule a ->  at position 10
.bbabbbbbacaca.b
	rule a ->  at position 10
.bbabbbbbacca.b
	rule ab -> bbaca at position 11
.bbabbbbbaccbbaca.
	rule ccb ->  at position 9
.bbabbbbbabaca.
	rule ab -> bbaca at position 8
.bbabbbbbbbacaaca.