MAYBE
36.11/10.31	MAYBE
36.11/10.31	
36.11/10.31	Problem:
36.11/10.31	 a(x1) -> x1
36.11/10.31	 a(b(x1)) -> c(b(b(a(a(x1)))))
36.11/10.31	 b(b(x1)) -> x1
36.11/10.31	 c(c(x1)) -> x1
36.11/10.31	
36.11/10.31	Proof:
36.11/10.31	 Open
36.11/10.31	EOF