MAYBE
56.23/26.50	MAYBE
56.23/26.50	
56.23/26.50	Problem:
56.23/26.50	 a(x1) -> x1
56.23/26.50	 a(b(x1)) -> c(b(x1))
56.23/26.50	 a(c(c(x1))) -> c(c(a(a(x1))))
56.23/26.50	
56.23/26.50	Proof:
56.23/26.50	 Open
56.41/26.50	EOF