#define _USE_MATH_DEFINES
#include <algorithm>
#include <cstdio>
#include <functional>
#include <iostream>
#include <cfloat>
#include <climits>
#include <cstring>
#include <cmath>
#include <map>
#include <queue>
#include <random>
#include <set>
#include <sstream>
#include <stack>
#include <string>
#include <time.h>
#include <vector>
using namespace std;

typedef long long ll;
typedef unsigned long long ull;
typedef pair<int, int> i_i;
typedef pair<int, ll> i_ll;
typedef pair<ll, int> ll_i;
typedef pair<double, int> d_i;
typedef pair<ll, ll> ll_ll;
typedef pair<double, double> d_d;
struct edge { int u, v; ll w; };

ll MOD = 1000000007;
ll _MOD = 1000000009;
double EPS = 1e-10;

int main() {
	vector<bool> a(10, true);
	int N; cin >> N;
	while (N--) {
		vector<bool> b(10, false);
		int A, B, C, D;
		cin >> A >> B >> C >> D;
		b[A] = b[B] = b[C] = b[D] = true;
		string R; cin >> R;
		if (R == "NO")
			for (int i = 0; i < 10; i++)
				b[i] = !b[i];
		for (int i = 0; i < 10; i++)
			a[i] = a[i] && b[i];
	}
	for (int i = 0; i < 10; i++)
		if (a[i])
			cout << i << endl;
}