Problem:
Finding Missing Cards

Taro is going to play a card game. However, now he has only n cards, even though there should be 52 cards (he has no Jokers).

The 52 cards include 13 ranks of each of the four suits: spade, heart, club and diamond.

Input

In the first line, the number of cards n (n ≤ 52) is given.

In the following n lines, data of the n cards are given. Each card is given by a pair of a character and an integer which represent its suit and rank respectively. A suit is represented by 'S', 'H', 'C' and 'D' for spades, hearts, clubs and diamonds respectively. A rank is represented by an integer from 1 to 13.

Output

Print the missing cards. The same as the input format, each card should be printed with a character and an integer separated by a space character in a line.
Arrange the missing cards in the following priorities:

Print cards of spades, hearts, clubs and diamonds in this order.

If the suits are equal, print cards with lower ranks first.

Sample Input

47
S 10
S 11
S 12
S 13
H 1
H 2
S 6
S 7
S 8
S 9
H 6
H 8
H 9
H 10
H 11
H 4
H 5
S 2
S 3
S 4
S 5
H 12
H 13
C 1
C 2
D 1
D 2
D 3
D 4
D 5
D 6
D 7
C 3
C 4
C 5
C 6
C 7
C 8
C 9
C 10
C 11
C 13
D 9
D 10
D 11
D 12
D 13

Sample Output

S 1
H 3
H 7
C 12
D 8

Note

      解説

Solution in C# (judge verdict: Accepted)

using System;

namespace ITP_6_B{
    public class Program{
        public static void Main(string[] args){
            bool[,] result = new bool[4,13];

            int count = int.Parse(Console.ReadLine());
            string temp = null;
            for(int i=0; i<count; i++){
                temp = Console.ReadLine();
                string[] key = temp.Split(' ');
                result[ConvertMark(key[0]),int.Parse(key[1])-1] = true;
            }
            //????????????
            for(int i=0; i<4; i++){
                for(int k=0; k<13; k++){
                    if(!result[i,k]){
                        int lank = k+1;
                        Console.WriteLine(revertMark(i)+" "+lank);
                    } 
                }
            }
        }
        private static int ConvertMark(string mark){
            switch(mark){
                case "S": return 0;
                case "H": return 1;
                case "C": return 2;
                case "D": return 3;
                default : return -1;
            }
        }

        private static string revertMark(int mark){
            switch(mark){
                case 0: return "S";
                case 1: return "H";
                case 2: return "C";
                case 3: return "D";
                default : return null;
            }
        }
    }
}