MAYBE
40.91/10.74	MAYBE
40.91/10.74	
40.91/10.74	Problem:
40.91/10.74	 a(x1) -> x1
40.91/10.74	 a(a(b(x1))) -> c(a(b(b(a(a(x1))))))
40.91/10.74	 b(c(x1)) -> x1
40.91/10.74	
40.91/10.74	Proof:
40.91/10.74	 Open
40.91/10.74	EOF