using System;

​

public class Program

{

    public static void Main()

    {

        int n = 0;

        for (int i = 0; i <= 4; i++)

        {

            for (int j = i + 1; j <= 4; j++)

            {

                for (int k = j + 1; k <= 4; k++)

                {

                    n++;

                    Console.WriteLine("{0}: ({1},{2},{3})", n, i, j, k);

                }

            }

        }

    }

}