using System;public class Program

{   public static void Main()

    {

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

    for (int s = 0; s < n; s++)

    {

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

    {

        for (int j = i; j < n; j++)

        {

            Console.Write("* ", n);

        }

        Console.WriteLine();

    }

        for (int g = (n * 2); g > n; g--)

        {

            for (int p = g; p > n; p--)

            {

            Console.Write("* ", g);

            }

            Console.WriteLine();

        }

    }

    }

}