#include <bits/stdc++.h>
using namespace std;

int main() {
  int n;
  cin >> n;
  vector<bool> ans(10, true);
  for(int i = 0; i < n; i++){
    vector<int> now(4);
    for(int j = 0; j < 4; j++) cin >> now.at(j);
    string r;
    cin >> r;
    if(r == "NO"){
      for(int j = 0; j < 4; j++) ans.at(now.at(j)) = false;
      continue;
    }
    for(int j = 0; j < 10; j++){
      bool ok = false;
      for(int k = 0; k < 4; k++){
        if(j == now.at(k)) ok = true;
      }
      if(ok) continue;
      ans.at(j) = false;
    }
  }
  
  for(int i = 0; i < 10; i++){
    if(ans.at(i)) cout << i << endl;
  }
}