Loop of length 11 starting with a string of length 6
found after enumerating 13296 derivations:

.ab.bbcb
	rule ab -> baca at position 0
.baca.bbcb
	rule ab -> baca at position 3
.bacbaca.bcb
	rule b ->  at position 3
.bacaca.bcb
	rule a ->  at position 3
.bacca.bcb
	rule cc ->  at position 2
.baa.bcb
	rule ab -> baca at position 2
.babaca.cb
	rule a ->  at position 5
.babac.cb
	rule cc ->  at position 4
.baba.b
	rule ab -> baca at position 3
.babbaca.
	rule a -> b at position 4
.babbbca.
	rule a -> b at position 6
.babbbcb.