#include <iostream>
#include <algorithm>
#include <vector>

void solve() {
    int n;
    std::cin >> n;

    int ans = (1 << 10) - 1;
    while (n--) {
        int b = 0;
        for (int i = 0; i < 4; ++i) {
            int x;
            std::cin >> x;
            b |= (1 << x);
        }

        std::string s;
        std::cin >> s;
        if (s == "NO") b = ~b;
        ans &= b;
    }

    for (int i = 0; i <= 9; ++i) {
        if ((ans >> i) & 1) std::cout << i << std::endl;
    }
}

int main() {
    std::cin.tie(nullptr);
    std::cout.tie(nullptr);
    std::ios::sync_with_stdio(false);

    solve();

    return 0;
}