2.81/1.29	YES
2.81/1.29	
2.81/1.29	Proof:
2.81/1.29	This system is confluent.
2.81/1.29	By \cite{GNG13}, Theorem 9.
2.95/1.32	This system is of type 3 or smaller.
2.95/1.32	This system is deterministic.
2.95/1.32	This system is weakly left-linear.
2.95/1.32	System R transformed to optimized U(R).
2.95/1.32	This system is orthogonal.
2.95/1.32	
5.31/1.87	EOF