Loop of length 26 starting with a string of length 13
found after enumerating 295295 derivations:

.cbbb.bbbbbbbbb
	rule cbbb -> aabacc at position 0
.aabacc.bbbbbbbbb
	rule cbbb -> aabacc at position 5
.aabacaabacc.bbbbbb
	rule a -> b at position 5
.aabacbabacc.bbbbbb
	rule a -> b at position 6
.aabacbbbacc.bbbbbb
	rule a -> b at position 8
.aabacbbbbcc.bbbbbb
	rule cbbb -> aabacc at position 10
.aabacbbbbcaabacc.bbb
	rule a -> b at position 10
.aabacbbbbcbabacc.bbb
	rule a -> b at position 11
.aabacbbbbcbbbacc.bbb
	rule cbbb -> aabacc at position 9
.aabacbbbbaabaccacc.bbb
	rule a -> b at position 9
.aabacbbbbbabaccacc.bbb
	rule a -> b at position 10
.aabacbbbbbbbaccacc.bbb
	rule a -> b at position 12
.aabacbbbbbbbbccacc.bbb
	rule a -> b at position 15
.aabacbbbbbbbbccbcc.bbb
	rule cbbb -> aabacc at position 17
.aabacbbbbbbbbccbcaabacc.
	rule a -> b at position 17
.aabacbbbbbbbbccbcbabacc.
	rule a -> b at position 18
.aabacbbbbbbbbccbcbbbacc.
	rule cbbb -> aabacc at position 16
.aabacbbbbbbbbccbaabaccacc.
	rule a -> b at position 16
.aabacbbbbbbbbccbbabaccacc.
	rule a -> b at position 17
.aabacbbbbbbbbccbbbbaccacc.
	rule cbbb -> aabacc at position 14
.aabacbbbbbbbbcaabaccbaccacc.
	rule a -> b at position 14
.aabacbbbbbbbbcbabaccbaccacc.
	rule a -> b at position 15
.aabacbbbbbbbbcbbbaccbaccacc.
	rule cbbb -> aabacc at position 13
.aabacbbbbbbbbaabaccaccbaccacc.
	rule a -> b at position 13
.aabacbbbbbbbbbabaccaccbaccacc.
	rule a -> b at position 14
.aabacbbbbbbbbbbbaccaccbaccacc.
	rule a -> b at position 16
.aabacbbbbbbbbbbbbccaccbaccacc.