Input TRS:
    1: if(true(),x,y) -> x
    2: if(false(),x,y) -> y
    3: if(x,y,y) -> y
    4: if(if(x,y,z),u(),v()) -> if(x,if(y,u(),v()),if(z,u(),v()))
Number of Rules: 4
Direct QTKBOS ... orients all.
	I(if) = 2 * x1 + x2 + x3	sigma(if) = [1,3,2]
	I(u) = 1
	I(v) = 1
	I(true) = 3
	I(false) = 3
    PREC: if = u = v = true = false
Number of Rules: 0