Loop of length 32 starting with a string of length 11
found after enumerating 1961165 derivations:

.a.bbcbbccbcc
	rule a -> b at position 0
.b.bbcbbccbcc
	rule bbbc -> ccaaaa at position 0
.ccaaaa.bbccbcc
	rule a -> b at position 2
.ccbaaa.bbccbcc
	rule a -> b at position 3
.ccbbaa.bbccbcc
	rule a -> b at position 4
.ccbbba.bbccbcc
	rule a -> b at position 5
.ccbbbb.bbccbcc
	rule bbbc -> ccaaaa at position 5
.ccbbbccaaaa.cbcc
	rule bbbc -> ccaaaa at position 2
.ccccaaaacaaaa.cbcc
	rule a -> b at position 5
.ccccabaacaaaa.cbcc
	rule a -> b at position 6
.ccccabbacaaaa.cbcc
	rule a -> b at position 7
.ccccabbbcaaaa.cbcc
	rule bbbc -> ccaaaa at position 5
.ccccaccaaaaaaaa.cbcc
	rule a -> b at position 9
.ccccaccaabaaaaa.cbcc
	rule a -> b at position 10
.ccccaccaabbaaaa.cbcc
	rule a -> b at position 11
.ccccaccaabbbaaa.cbcc
	rule a -> b at position 12
.ccccaccaabbbbaa.cbcc
	rule a -> b at position 13
.ccccaccaabbbbba.cbcc
	rule a -> b at position 14
.ccccaccaabbbbbb.cbcc
	rule bbbc -> ccaaaa at position 12
.ccccaccaabbbccaaaa.bcc
	rule bbbc -> ccaaaa at position 9
.ccccaccaaccaaaacaaaa.bcc
	rule a -> b at position 13
.ccccaccaaccaabacaaaa.bcc
	rule a -> b at position 14
.ccccaccaaccaabbcaaaa.bcc
	rule a -> b at position 16
.ccccaccaaccaabbcbaaa.bcc
	rule a -> b at position 17
.ccccaccaaccaabbcbbaa.bcc
	rule a -> b at position 18
.ccccaccaaccaabbcbbba.bcc
	rule a -> b at position 19
.ccccaccaaccaabbcbbbb.bcc
	rule bbbc -> ccaaaa at position 18
.ccccaccaaccaabbcbbccaaaa.c
	rule a -> b at position 20
.ccccaccaaccaabbcbbccbaaa.c
	rule a -> b at position 21
.ccccaccaaccaabbcbbccbbaa.c
	rule a -> b at position 22
.ccccaccaaccaabbcbbccbbba.c
	rule a -> b at position 23
.ccccaccaaccaabbcbbccbbbb.c
	rule bbbc -> ccaaaa at position 21
.ccccaccaaccaabbcbbccbccaaaa.