#include <bits/stdc++.h>
using namespace std;
 
typedef long long ll;
typedef pair<int,int> P;
 
const int INF = 1e9;
const int mod = 1e9+7;
const double EPS = 1e-10;
const double PI = acos(-1.0);
 
int dp[10010];
int cnt[10010];

int main()
{
    int n;
    cin >> n;
    vector<int> flag(10,1);
    for(int i = 0; i < n; i++){
        int a,b,c,d; string s;
        cin >> a >> b >> c >> d >> s;
        for(int j = 0; j < 10; j++){
            if(s[0] == 'Y' && (a != j && b != j && c != j && d != j)) flag[j] = 0;
            if(s[0] == 'N' && (a == j || b == j || c == j || d == j)) flag[j] = 0;
        }
    }
    for(int i = 0; i < 10; i++) if(flag[i]) cout <<  i << endl;
    return 0;
}