3.88/1.87	YES
3.88/1.87	
3.88/1.87	Proof:
3.88/1.87	This system is confluent.
3.88/1.87	By \cite{GNG13}, Theorem 9.
3.88/1.87	This system is of type 3 or smaller.
3.88/1.87	This system is deterministic.
3.88/1.87	This system is weakly left-linear.
3.88/1.87	System R transformed to optimized U(R).
3.88/1.87	This system is orthogonal.
3.88/1.87	
5.26/2.23	EOF