1.21/0.73	YES
1.21/0.73	
1.21/0.73	Proof:
1.21/0.73	This system is confluent.
1.21/0.73	By \cite{SMI95}, Corollary 4.7 or 5.3.
1.21/0.73	This system is normal.
1.21/0.73	This system is of type 3 or smaller.
1.21/0.73	This system is right-stable.
1.21/0.73	This system is properly oriented.
1.21/0.73	This is an overlay system.
1.21/0.73	This system is left-linear.
1.21/0.73	All 0 critical pairs are trivial or infeasible.
1.21/0.73	
1.21/0.75	EOF