MAYBE
26.91/10.17	MAYBE
26.91/10.17	
26.91/10.17	Problem:
26.91/10.17	 a(x1) -> b(x1)
26.91/10.17	 a(b(x1)) -> b(a(c(a(x1))))
26.91/10.17	 b(x1) -> c(x1)
26.91/10.17	 c(c(x1)) -> x1
26.91/10.17	
26.91/10.17	Proof:
26.91/10.17	 Open
26.91/10.18	EOF