Input TRS:
    1: filter(cons(X),0(),M) -> cons(0())
    2: filter(cons(X),s(N),M) -> cons(X)
    3: sieve(cons(0())) -> cons(0())
    4: sieve(cons(s(N))) -> cons(s(N))
    5: nats(N) -> cons(N)
    6: zprimes() -> sieve(nats(s(s(0()))))
Number of Rules: 6
Direct QWPOS(mPol) ... orients all.
	I(nats) = 3 * x1	sigma(nats) = [1]
	I(0) = 0
	I(s) = 3 * x1	sigma(s) = [1]
	I(zprimes) = 1
	I(sieve) = 3 * x1	sigma(sieve) = [1]
	I(cons) = 3 * x1	sigma(cons) = [1]
	I(filter) = 3 * x1 + 3 * x2 + 3 * x3 + 3	sigma(filter) = [1,2,3]
    PREC: 0 = zprimes > nats > s = sieve = cons = filter
Number of Rules: 0