Input TRS:
    1: a(a(x)) -> b(b(x))
    2: b(b(a(x))) -> a(b(b(x)))
Number of Rules: 2
Direct QWPOS(Pol) ... orients all.
	I(a) = x1 + 3	sigma(a) = [1]
	I(b) = x1 + 1	sigma(b) = [1]
    PREC: a = b
Number of Rules: 0