Loop of length 12 starting with a string of length 9
found after enumerating 6927 derivations:

.acc.cccccc
	rule acc -> cccaba at position 0
.cccaba.cccccc
	rule acc -> cccaba at position 5
.cccabcccaba.cccc
	rule bc ->  at position 4
.cccaccaba.cccc
	rule acc -> cccaba at position 8
.cccaccabcccaba.cc
	rule bc ->  at position 7
.cccaccaccaba.cc
	rule acc -> cccaba at position 6
.cccacccccabaaba.cc
	rule a ->  at position 11
.cccacccccababa.cc
	rule acc -> cccaba at position 13
.cccacccccababcccaba.
	rule bc ->  at position 12
.cccacccccabaccaba.
	rule acc -> cccaba at position 11
.cccacccccabcccabaaba.
	rule bc ->  at position 10
.cccacccccaccabaaba.
	rule acc -> cccaba at position 9
.cccaccccccccabaabaaba.