7.52/2.86	YES
7.52/2.86	
7.52/2.86	Proof:
7.52/2.86	This system is confluent.
7.52/2.86	By \cite{GNG13}, Theorem 9.
7.52/2.86	This system is of type 3 or smaller.
7.52/2.86	This system is deterministic.
7.52/2.86	This system is weakly left-linear.
7.52/2.86	System R transformed to optimized U(R).
7.52/2.86	This system is orthogonal.
7.52/2.86	
9.89/3.50	EOF