Loop of length 16 starting with a string of length 11
found after enumerating 12723 derivations:

.aaa.caaccacc
	rule aaa -> b at position 0
.b.caaccacc
	rule bc -> ccaaaa at position 0
.ccaaaa.aaccacc
	rule aaa -> b at position 2
.ccba.aaccacc
	rule aaa -> b at position 3
.ccbb.ccacc
	rule bc -> ccaaaa at position 3
.ccbccaaaa.cacc
	rule bc -> ccaaaa at position 2
.ccccaaaacaaaa.cacc
	rule aaa -> b at position 5
.ccccabcaaaa.cacc
	rule bc -> ccaaaa at position 5
.ccccaccaaaaaaaa.cacc
	rule aaa -> b at position 9
.ccccaccaabaaa.cacc
	rule aaa -> b at position 10
.ccccaccaabb.cacc
	rule bc -> ccaaaa at position 10
.ccccaccaabccaaaa.acc
	rule bc -> ccaaaa at position 9
.ccccaccaaccaaaacaaaa.acc
	rule aaa -> b at position 18
.ccccaccaaccaaaacaab.cc
	rule bc -> ccaaaa at position 18
.ccccaccaaccaaaacaaccaaaa.c
	rule aaa -> b at position 21
.ccccaccaaccaaaacaaccab.c
	rule bc -> ccaaaa at position 21
.ccccaccaaccaaaacaaccaccaaaa.