MAYBE
34.14/10.34	MAYBE
34.14/10.34	
34.14/10.34	Problem:
34.14/10.34	 a(x1) -> x1
34.14/10.34	 a(a(x1)) -> a(b(x1))
34.14/10.34	 b(x1) -> x1
34.14/10.34	 c(b(x1)) -> b(a(c(c(x1))))
34.14/10.34	
34.14/10.34	Proof:
34.14/10.34	 Open
34.14/10.35	EOF