MAYBE
24.66/10.19	MAYBE
24.66/10.19	
24.66/10.19	Problem:
24.66/10.19	 a(x1) -> x1
24.66/10.19	 a(b(x1)) -> b(a(a(c(b(x1)))))
24.66/10.19	 b(x1) -> a(x1)
24.66/10.19	 c(c(x1)) -> x1
24.66/10.19	
24.66/10.19	Proof:
24.66/10.19	 Open
24.66/10.19	EOF