0.00/0.43	MAYBE
0.00/0.43	
0.00/0.43	Problem:
0.00/0.43	up(x) -> x
0.00/0.43	down(x) -> x
0.00/0.43	up(x) -> up(s(x))
0.00/0.43	down(s(x)) -> down(x)
0.00/0.43	between(x, y, z) -> true() <= up(x) = y, down(z) = y
0.00/0.43	
0.00/0.43	Proof:
0.00/0.43	ConCon could not decide confluence of the system.
0.00/0.43	\cite{SMI95}, Corollary 4.7 or 5.3 do not apply.
0.00/0.43	
0.00/0.44	EOF