3.97/1.92	YES
3.97/1.92	
3.97/1.92	Proof:
3.97/1.92	This system is confluent.
3.97/1.92	By \cite{GNG13}, Theorem 9.
3.97/1.92	This system is of type 3 or smaller.
3.97/1.92	This system is deterministic.
3.97/1.92	This system is weakly left-linear.
3.97/1.92	System R transformed to optimized U(R).
3.97/1.92	This system is orthogonal.
3.97/1.92	
4.81/2.29	EOF