Loop of length 16 starting with a string of length 11
found after enumerating 27877 derivations:

.aa.acaaccacc
	rule aa -> ab at position 0
.ab.acaaccacc
	rule bac -> ccaaa at position 1
.accaaa.aaccacc
	rule aa -> ab at position 3
.accaba.aaccacc
	rule aa -> ab at position 5
.accabab.accacc
	rule bac -> ccaaa at position 6
.accabaccaaa.cacc
	rule bac -> ccaaa at position 4
.accaccaaacaaa.cacc
	rule aa -> ab at position 6
.accaccabacaaa.cacc
	rule bac -> ccaaa at position 7
.accaccaccaaaaaa.cacc
	rule aa -> ab at position 10
.accaccaccaabaaa.cacc
	rule aa -> ab at position 12
.accaccaccaababa.cacc
	rule bac -> ccaaa at position 13
.accaccaccaabaccaaa.acc
	rule bac -> ccaaa at position 11
.accaccaccaaccaaacaaa.acc
	rule aa -> ab at position 18
.accaccaccaaccaaacaab.acc
	rule bac -> ccaaa at position 19
.accaccaccaaccaaacaaccaaa.c
	rule aa -> ab at position 21
.accaccaccaaccaaacaaccaba.c
	rule bac -> ccaaa at position 22
.accaccaccaaccaaacaaccaccaaa.