MAYBE
36.45/10.29	MAYBE
36.45/10.29	
36.45/10.29	Problem:
36.45/10.29	 a(x1) -> x1
36.45/10.29	 a(b(x1)) -> x1
36.45/10.29	 b(a(x1)) -> a(a(b(c(x1))))
36.45/10.29	 c(c(x1)) -> b(x1)
36.45/10.29	
36.45/10.29	Proof:
36.45/10.29	 Open
36.45/10.29	EOF