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;
using System.Collections.Generic;

class Program {
    static void Main( string[] args )
    {
        List<string> spades = CreateSuit( "S " );
        List<string> hearts = CreateSuit( "H " );
        List<string> clubs = CreateSuit( "C " );
        List<string> diamonds = CreateSuit( "D " );

        int n = int.Parse( Console.ReadLine() );

        for ( int i = 0; i < n; ++i ) {
            string card = Console.ReadLine();

            switch ( card[ 0 ] ) {
                case 'S': { spades.Remove( card ); break; }
                case 'H': { hearts.Remove( card ); break; }
                case 'C': { clubs.Remove( card ); break; }
                case 'D': { diamonds.Remove( card ); break; }

                default: { break; }
            }
        }

        Print( ref spades );
        Print( ref hearts );
        Print( ref clubs );
        Print( ref diamonds );
    }

    public static List<string> CreateSuit( string prefix )
    {
        List<string> suit = new List<string>( 13 );

        for ( int i = 1; i < 14; ++i ) {
            suit.Add( prefix + i );
        }

        return suit;
    }

    public static void Print( ref List<string> suit )
    {
        for ( int i = 0; i < suit.Count; ++i ) {
            Console.WriteLine( suit[ i ] );
        }
    }
}