#include <bits/stdc++.h>
#define rep(i,n) for(int i = 0; i < (n); i++)
using namespace std;
typedef long long ll;

int main(){
    cin.tie(0);
    ios::sync_with_stdio(0);

    int N; cin >> N;
    vector<vector<int>> v(N,vector<int>(4));
    vector<bool> R(N);
    rep(i,N){
        rep(j,4) cin >> v[i][j];
        string s; cin >> s;
        R[i] = (s == "YES");
    }

    for(int i=1;i<=9;i++){
        bool ng = false;
        rep(j,N){
            if(R[j]){
                bool ok = false;
                rep(k,4) if(v[j][k] == i) ok = true;
                if(!ok) ng = true;
            }else{
                bool no = false;
                rep(k,4) if(v[j][k] == i) no = true;
                if(no) ng = true;
            }
        }

        if(!ng) cout << i << endl;
    }
}