MAYBE
38.97/10.31	MAYBE
38.97/10.31	
38.97/10.31	Problem:
38.97/10.31	 a(b(x1)) -> x1
38.97/10.31	 a(c(x1)) -> c(c(x1))
38.97/10.31	 b(c(x1)) -> a(b(a(b(x1))))
38.97/10.31	
38.97/10.31	Proof:
38.97/10.31	 Open
38.97/10.32	EOF