Input TRS:
    1: ++(nil(),y) -> y
    2: ++(x,nil()) -> x
    3: ++(.(x,y),z) -> .(x,++(y,z))
    4: ++(++(x,y),z) -> ++(x,++(y,z))
Number of Rules: 4
Direct POLO(Pol) ... orients all.
	I(.) = 3 * x1 + x2 + 1
	I(nil) = 0
	I(++) = 3 * x1 + x2 + 1
Number of Rules: 0