#include <algorithm>
#include <iostream>
#include <string>
#include <vector>
#include <stack>
#define REP(i,n) for (int i=0;i<(n);i++)

using namespace std;

int main(){
	bool flag[10] = { true, true, true, true, true, true, true, true, true, true};
	int N, tmp[4];
	string tmp2;
	cin >> N;

	REP(i, N){
		REP(j, 4){ 
			cin >> tmp[j];
		}
		cin >> tmp2;
		if (tmp2 == "YES"){
			REP(j, 10){
				if (tmp[0] == j || tmp[1] == j || tmp[2] == j || tmp[3] == j){
					flag[j] = flag[j] && true;
				}
				else{
					flag[j] = false;
				}
			}
		}
		else{
			REP(j, 4) flag[tmp[j]] = false;
		}
	}

	REP(i, 10) if (flag[i]) cout << i << endl;

	return 0;
}