1.76/1.21	YES
1.76/1.21	
1.76/1.21	Proof:
1.92/1.22	This system is confluent.
1.92/1.22	Removed infeasible rules from system R.
1.92/1.22	By \cite{GNG13}, Theorem 9.
1.92/1.22	This system is of type 3 or smaller.
1.92/1.22	This system is deterministic.
1.92/1.22	This system is weakly left-linear.
1.92/1.22	System R transformed to optimized U(R).
1.92/1.22	This system is orthogonal.
1.92/1.22	
1.92/1.24	EOF