MAYBE
31.86/10.35	MAYBE
31.86/10.35	
31.86/10.35	Problem:
31.86/10.35	 a(x1) -> x1
31.86/10.35	 a(b(x1)) -> x1
31.86/10.35	 b(b(x1)) -> c(x1)
31.86/10.35	 c(a(x1)) -> a(a(b(c(x1))))
31.86/10.35	
31.86/10.35	Proof:
31.86/10.35	 Open
31.86/10.35	EOF