1.92/1.24	NO
1.92/1.24	
1.92/1.24	Proof:
1.92/1.24	This system is not confluent.
1.92/1.24	For the unconditional CP b = c the left- and right-hand sides are two different normal forms wrt R_u.
1.92/1.24	
1.92/1.30	EOF