use std::io::Read;

fn main() {
    let mut s = String::new();
    std::io::stdin().read_to_string(&mut s).ok();
    let mut itr = s.trim().split_whitespace();
    let n: usize = itr.next().unwrap().parse().unwrap();
    let mut good = vec![true; 10];
    for _ in 0..n {
        let a: usize = itr.next().unwrap().parse().unwrap();
        let b: usize = itr.next().unwrap().parse().unwrap();
        let c: usize = itr.next().unwrap().parse().unwrap();
        let d: usize = itr.next().unwrap().parse().unwrap();
        let s: &str = itr.next().unwrap();
        if s == "NO" {
            good[a] = false;
            good[b] = false;
            good[c] = false;
            good[d] = false;
        } else {
            for i in 0..10 {
                if !(i == a || i == b || i == c || i == d) {
                    good[i] = false;
                }
            }
        }
    }
    for i in 0..10 {
        if good[i] {
            println!("{}", i);
        }
    }
}