Loop of length 19 starting with a string of length 7
found after enumerating 2203 derivations:

.bbb.aacc
	rule bbb -> ccc at position 0
.ccc.aacc
	rule ccc -> bba at position 0
.bba.aacc
	rule aaa -> bcc at position 2
.bbbcc.cc
	rule ccc -> bba at position 3
.bbbbba.c
	rule bbb -> ccc at position 2
.bbccca.c
	rule ccc -> bba at position 2
.bbbbaa.c
	rule bbb -> ccc at position 1
.bcccaa.c
	rule ccc -> bba at position 1
.bbbaaa.c
	rule aaa -> bcc at position 3
.bbbbcc.c
	rule ccc -> bba at position 4
.bbbbbba.
	rule bbb -> ccc at position 3
.bbbccca.
	rule ccc -> bba at position 3
.bbbbbaa.
	rule bbb -> ccc at position 2
.bbcccaa.
	rule ccc -> bba at position 2
.bbbbaaa.
	rule aaa -> bcc at position 4
.bbbbbcc.
	rule bbb -> ccc at position 2
.bbccccc.
	rule ccc -> bba at position 2
.bbbbacc.
	rule bbb -> ccc at position 1
.bcccacc.
	rule ccc -> bba at position 1
.bbbaacc.