Loop of length 11 starting with a string of length 4
found after enumerating 543 derivations:

.b.bcb
	rule b -> a at position 0
.a.bcb
	rule ab -> bacbc at position 0
.bacbc.cb
	rule b -> a at position 3
.bacac.cb
	rule cc ->  at position 4
.baca.b
	rule ab -> bacbc at position 3
.bacbacbc.
	rule b -> a at position 3
.bacaacbc.
	rule a ->  at position 3
.bacacbc.
	rule a ->  at position 3
.baccbc.
	rule cc ->  at position 2
.babc.
	rule ab -> bacbc at position 1
.bbacbcc.
	rule a ->  at position 2
.bbcbcc.