MAYBE
97.14/41.29	MAYBE
97.14/41.29	
97.14/41.29	Problem:
97.14/41.29	 a(a(x1)) -> b(x1)
97.14/41.29	 b(c(x1)) -> a(x1)
97.14/41.29	 c(b(x1)) -> a(b(c(c(x1))))
97.14/41.29	
97.14/41.29	Proof:
97.14/41.29	 Open
97.31/41.30	EOF