1.88/1.28	NO
1.88/1.28	
1.88/1.28	Proof:
1.88/1.29	This system is not confluent.
1.88/1.29	For the unconditional CP s(c) = t the left- and right-hand sides are two different normal forms wrt R_u.
1.88/1.29	
2.13/1.33	EOF