using System;

using System.Collections.Generic;

​

public class Program

{

    public static void Main()

    {

        GetPermutations(3);

    }

    // Step 5: Return all possible permutations for the

    // provided number of dice

    private static IEnumerable<int[]> GetPermutations(int numDice)

    {       

        var output = new List<int[]>();

        for (int i = 0; i < Math.Pow(6, numDice); i++)

        {

            var permutation = new int[numDice];

            for (int j = 0; j < numDice; j++)

            {

                permutation[j] = (i / (int)Math.Pow(6, j)) % 6 + 1;

            }

            output.Add(permutation);

            var combined = string.Join(" ", permutation);

            Console.WriteLine($"{i + 1}: {combined}");

        }

        return output;

    }

}