#include <bits/stdc++.h>
using namespace std;
int main() {
  int n;
  cin >> n;
  int r[4][13];
  for (int i = 0; i <= 3; i++) {
    for (int j = 0; j <= 12; j++) {
      r[i][j] = 0;
    }
  }
  for (int k = 0; k < n; k++) {
    string a;
    int b;
    cin >> a >> b;
    if (a == "S") {
      r[0][b] = 1;
    } else if (a == "H") {
      r[1][b] = 1;
    } else if (a == "C") {
      r[2][b] = 1;
    } else if (a == "D") {
      r[3][b] = 1;
    }
  }
  for (int l = 0; l <= 3; l++) {
    for (int m = 0; m <= 12; m++) {
      if (r[l][m] == 1) {
        if (l == 0) {
          cout << "S" << m << endl;
        } else if (l == 1) {
          cout << "H" << m + 1 << endl;
        } else if (l == 2) {
          cout << "C" << m << endl;
        } else if (l == 3) {
          cout << "D" << m << endl;
        }
      }
    }
  }
}
