1.91/1.28	YES
1.91/1.28	
1.91/1.29	Proof:
1.91/1.29	This system is confluent.
1.91/1.29	Inlined conditions in System R.
1.91/1.29	By \cite{GNG13}, Theorem 9.
1.91/1.29	This system is of type 3 or smaller.
1.91/1.29	This system is deterministic.
1.91/1.29	This system is weakly left-linear.
1.91/1.29	System R transformed to optimized U(R).
1.91/1.29	This system is orthogonal.
1.91/1.29	
4.61/2.06	EOF