MAYBE
135.41/55.33	MAYBE
135.41/55.33	
135.41/55.33	Problem:
135.41/55.33	 a(b(a(x1))) -> b(b(a(x1)))
135.41/55.33	 b(b(b(x1))) -> b(a(x1))
135.41/55.33	 b(b(x1)) -> a(a(a(x1)))
135.41/55.33	
135.41/55.33	Proof:
135.41/55.33	 Open
135.41/55.34	EOF