MAYBE
66.24/29.30	MAYBE
66.24/29.30	
66.24/29.30	Problem:
66.24/29.30	 a(x1) -> x1
66.24/29.30	 a(a(b(b(x1)))) -> b(c(a(c(x1))))
66.24/29.30	 c(x1) -> b(a(x1))
66.24/29.30	
66.24/29.30	Proof:
66.24/29.30	 Open
66.24/29.31	EOF