Loop of length 14 starting with a string of length 13
found after enumerating 40995 derivations:

.aab.ababababab
	rule aab -> baba at position 0
.baba.ababababab
	rule a ->  at position 1
.bba.ababababab
	rule aab -> baba at position 2
.bbbaba.abababab
	rule bbb -> a at position 0
.aaba.abababab
	rule aab -> baba at position 3
.aabbaba.ababab
	rule aab -> baba at position 6
.aabbabbaba.abab
	rule a ->  at position 7
.aabbabbba.abab
	rule bbb -> a at position 5
.aabbaaa.abab
	rule aab -> baba at position 6
.aabbaababa.ab
	rule aab -> baba at position 4
.aabbbabaaba.ab
	rule bbb -> a at position 2
.aaaabaaba.ab
	rule aab -> baba at position 2
.aababaaaba.ab
	rule aab -> baba at position 6
.aababababaa.ab
	rule aab -> baba at position 10
.aababababababa.