Loop of length 14 starting with a string of length 8
found after enumerating 1692 derivations:

.ccc.bccbc
	rule ccc -> ccabb at position 0
.ccabb.bccbc
	rule bb -> bca at position 4
.ccabbca.ccbc
	rule bb -> bca at position 3
.ccabcaca.ccbc
	rule a ->  at position 5
.ccabcca.ccbc
	rule a ->  at position 6
.ccabcc.ccbc
	rule ccc -> ccabb at position 5
.ccabcccabb.bc
	rule a ->  at position 7
.ccabcccbb.bc
	rule bb -> bca at position 8
.ccabcccbbca.c
	rule bb -> bca at position 7
.ccabcccbcaca.c
	rule a ->  at position 9
.ccabcccbcca.c
	rule a ->  at position 10
.ccabcccbcc.c
	rule ccc -> ccabb at position 8
.ccabcccbccabb.
	rule a ->  at position 10
.ccabcccbccbb.
	rule bb -> bca at position 10
.ccabcccbccbca.