#include <iostream>
#include <algorithm>
#include <string>
#include <vector>
#include <map>
#include <set>
#include <stdio.h>
#include <cstring>
#include <queue>
#include <stack>
#include <functional>
#include <math.h>
#include <iomanip>
using namespace std;
#define Would
#define you
const int INF = 999999999;
const int MOD = 1e9 + 7;
const double pi = 3.141592653589793238;

bool ban[10];
int main() {
	int n, a, b, c, d;
	cin >> n;
	for (int i = 0; i < n; ++i) {
		cin >> a >> b >> c >> d;
		string h;
		cin >> h;
		if (h == "NO") {
			for (int i = 1; i <= 9; ++i) {
				if (i == a || i == b || i == c || i == d) { ban[i] = 1; }
			}
		}
		else {
			for (int i = 1; i <= 9; ++i) {
				if (i != a && i != b && i != c && i != d) { ban[i] = 1; }
			}
		}
	}
	for (int i = 1; i <= 9; ++i) {
		if (!ban[i]) { cout << i << endl; }
	}
}