4.41/1.70	YES
4.41/1.70	
4.41/1.70	Proof:
4.41/1.70	This system is confluent.
4.41/1.70	By \cite{GNG13}, Theorem 9.
4.41/1.70	This system is of type 3 or smaller.
4.41/1.70	This system is deterministic.
4.41/1.70	This system is weakly left-linear.
4.41/1.70	System R transformed to optimized U(R).
4.41/1.70	This system is orthogonal.
4.41/1.70	
5.41/2.10	EOF