2.76/1.88	YES
2.76/1.88	
2.76/1.88	Proof:
2.76/1.88	This system is confluent.
2.76/1.88	By \cite{GNG13}, Theorem 9.
2.76/1.88	This system is of type 3 or smaller.
2.76/1.88	This system is deterministic.
2.76/1.88	This system is weakly left-linear.
2.76/1.88	System R transformed to optimized U(R).
2.76/1.88	This system is orthogonal.
2.76/1.88	
6.16/2.51	EOF