MAYBE
MAYBE
TRS:
 {
   filter(cons(X), 0(), M) -> cons(0()),
  filter(cons(X), s(N), M) -> cons(X),
          sieve(cons(0())) -> cons(0()),
         sieve(cons(s(N))) -> cons(s(N)),
                   nats(N) -> cons(N),
                 zprimes() -> sieve(nats(s(s(0()))))
 }
 DUP: We consider a non-duplicating system.
  Trs:
   {
     filter(cons(X), 0(), M) -> cons(0()),
    filter(cons(X), s(N), M) -> cons(X),
            sieve(cons(0())) -> cons(0()),
           sieve(cons(s(N))) -> cons(s(N)),
                     nats(N) -> cons(N),
                   zprimes() -> sieve(nats(s(s(0()))))
   }
  Fail