#include <iostream>
#include <string>
#include <vector>
#include <algorithm>
#include <queue>
#include <cmath>
#include <climits>
#include <iomanip>
#include <set>
#include <map>
using namespace std;
typedef long long ll;
int main(){
    ll n;
    cin >> n;
    bool bo[10];
    for(int i = 0;i < 10;i++)bo[i] = true;
    for(int i = 0;i < n;i++){
        ll a,b,c,d;
        cin >> a >> b >> c >> d;
        string s;
        cin >> s;
        if(s[0] == 'N')bo[a] = false,bo[b] = false,bo[c] = false,bo[d] = false;
    }
    for(int i = 0;i < 10;i++){
        if(bo[i])cout << i << endl;
    }
}