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 QLPOS ... orients all.
	sigma(nats) = [1]
	sigma(s) = [1]
	sigma(sieve) = [1]
	sigma(cons) = [1]
	sigma(filter) = [1,2,3]
    PREC: zprimes = filter > nats = s = sieve > 0 = cons
Number of Rules: 0