Loop of length 12 starting with a string of length 9
found after enumerating 30044 derivations:

.abc.bccccc
	rule abc -> ccaa at position 0
.ccaa.bccccc
	rule abc -> ccaa at position 3
.ccaccaa.cccc
	rule cc -> b at position 3
.ccabaa.cccc
	rule a -> b at position 5
.ccabab.cccc
	rule abc -> ccaa at position 4
.ccabccaa.ccc
	rule a -> b at position 7
.ccabccab.ccc
	rule abc -> ccaa at position 6
.ccabccccaa.cc
	rule cc -> b at position 5
.ccabcbcaa.cc
	rule a -> b at position 8
.ccabcbcab.cc
	rule abc -> ccaa at position 7
.ccabcbcccaa.c
	rule a -> b at position 10
.ccabcbcccab.c
	rule abc -> ccaa at position 9
.ccabcbcccccaa.