MAYBE
37.85/11.36	MAYBE
37.85/11.36	
37.85/11.36	Problem:
37.85/11.36	 a(x1) -> b(x1)
37.85/11.36	 a(c(x1)) -> c(c(a(a(b(x1)))))
37.85/11.36	 b(b(x1)) -> x1
37.85/11.36	
37.85/11.36	Proof:
37.85/11.36	 Open
37.85/11.38	EOF