#include <bits/stdc++.h>
using namespace std;
int main(){
    int i, j;
    int S[10];
    for(j=1;j<=9;j++)S[j] = 1;
    int n;
    cin >> n;
    for(i=0;i<n;i++){
        int a, b, c, d;
        string r;
        cin >> a >> b >> c >> d >> r;
        if(r == "YES"){
            for(j=1;j<=9;j++){
                if(j==a)continue;
                if(j==b)continue;
                if(j==c)continue;
                if(j==d)continue;
                S[j] = 0;
            }
        }else{
            S[a] = 0;
            S[b] = 0;
            S[c] = 0;
            S[d] = 0;
        }
    }
    for(j=1;j<=9;j++)if(S[j])cout << j << endl;
}