Loop of length 13 starting with a string of length 8
found after enumerating 10790 derivations:

.ba.aaacaa
	rule ba -> aacb at position 0
.aacb.aaacaa
	rule ba -> aacb at position 3
.aacaacb.aacaa
	rule a ->  at position 3
.aacacb.aacaa
	rule a ->  at position 3
.aaccb.aacaa
	rule cc -> b at position 2
.aabb.aacaa
	rule ba -> aacb at position 3
.aabaacb.acaa
	rule ba -> aacb at position 6
.aabaacaacb.caa
	rule a ->  at position 6
.aabaacacb.caa
	rule a ->  at position 6
.aabaaccb.caa
	rule cc -> b at position 5
.aabaabb.caa
	rule bc ->  at position 6
.aabaab.aa
	rule ba -> aacb at position 5
.aabaaaacb.a
	rule ba -> aacb at position 8
.aabaaaacaacb.