MAYBE
37.64/10.31	MAYBE
37.64/10.31	
37.64/10.31	Problem:
37.64/10.31	 a(b(x1)) -> x1
37.64/10.31	 a(c(x1)) -> b(c(a(a(x1))))
37.64/10.31	 c(b(x1)) -> a(c(x1))
37.64/10.31	
37.64/10.31	Proof:
37.64/10.31	 Open
37.64/10.31	EOF