Loop of length 16 starting with a string of length 10
found after enumerating 199930 derivations:

.caba.bababa
	rule caba -> aaacca at position 0
.aaacca.bababa
	rule caba -> aaacca at position 4
.aaacaaacca.baba
	rule a -> b at position 5
.aaacabacca.baba
	rule caba -> aaacca at position 8
.aaacabacaaacca.ba
	rule a -> b at position 9
.aaacabacabacca.ba
	rule caba -> aaacca at position 7
.aaacabaaaaccacca.ba
	rule a -> b at position 7
.aaacababaaccacca.ba
	rule a -> b at position 9
.aaacabababccacca.ba
	rule caba -> aaacca at position 14
.aaacabababccacaaacca.
	rule a -> b at position 15
.aaacabababccacabacca.
	rule caba -> aaacca at position 13
.aaacabababccaaaaccacca.
	rule a -> b at position 13
.aaacabababccabaaccacca.
	rule caba -> aaacca at position 11
.aaacabababcaaaccaaccacca.
	rule a -> b at position 12
.aaacabababcabaccaaccacca.
	rule caba -> aaacca at position 10
.aaacabababaaaccaccaaccacca.
	rule a -> b at position 11
.aaacababababaccaccaaccacca.