using System;

using System.Collections.Generic;

using System.Linq;

using static System.Console;

​

​

public class Program

{

    public static void Main()

    {

        string[] highCards = { "A", "K", "Q", "J", "T" };

        string[] suits = { "a", "b", "c", "d" };

        List<string> hashes = new List<string>();

        List<string> possibleCombinations = new List<string>();

        // Loop over every high card

        foreach( string highCard1 in highCards ) {

            // Loop over every suit

            foreach( string suit1 in suits ) {

                 // Loop over every high card (card2)

                 foreach( string highCard2 in highCards ) {

                     // Loop over every suit (suit2)

                     foreach( string suit2 in suits ) {

                         // Disregard any suit we've already seen

                         if( suit1 == suit2 ) continue;

                         // Loop over every high card (card3)

                         foreach( string highCard3 in highCards ) {

                             // Loop over every suit (suit3)

                             foreach( string suit3 in suits ) {

                                 // Disregard any suit we've already seen

                                 if( suit1 == suit2 || suit1 == suit3 || suit2 == suit3 ) continue;

                                 // Add the distinct value to the results

                                 string result = highCard1+suit1 + " " + highCard2+suit2 + " " + highCard3+suit3;

                                 // Check if we already got that result

                                 string hash = String.Concat(highCard1+highCard2+highCard3.OrderBy(c => c)) + String.Concat(suit1+suit2+suit3.OrderBy(c => c));

                                 if( hashes.IndexOf(hash) > -1 ) continue;

                                 hashes.Add(hash);

                                 possibleCombinations.Add(highCard1+suit1 + " " + highCard2+suit2 + " " + highCard3+suit3);

                             }

                         }

                     }

                 }

            }

        }

        // Generate some insights about the data

        Console.WriteLine("There are " + possibleCombinations.Count().ToString() + " possible combinations");

        foreach( var combination in possibleCombinations ) {

            Console.WriteLine(combination);

        }

    }

}