1.90/1.30	NO
1.90/1.30	
1.90/1.30	Proof:
1.90/1.31	This system is not confluent.
1.90/1.31	For the unconditional CP h(b) = h(c) the left- and right-hand sides are two different normal forms wrt R_u.
1.90/1.31	
3.53/1.77	EOF