3.73/1.84	YES
3.73/1.84	
3.73/1.84	Proof:
3.73/1.84	This system is confluent.
3.73/1.84	By \cite{GNG13}, Theorem 9.
3.73/1.84	This system is of type 3 or smaller.
3.73/1.84	This system is deterministic.
3.73/1.84	This system is weakly left-linear.
3.73/1.84	System R transformed to optimized U(R).
3.73/1.84	This system is orthogonal.
3.73/1.84	
5.48/2.27	EOF