using System;

public class Boat

{

    public static void Main()

    {

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

        int a = 0;

        int b = 1;

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

            {

            Console.WriteLine("{0}{1}{2}", new string('.', (n-1)-a), new string ('*', b), new String('.', n));

                i++;b+=2;a+=2;

            }

        a = 2;

        b = 1;

        for (int m = 0; m < n-1; m++)

            {

            Console.WriteLine("{0}{1}{2}", new string('.', a), new string ('*', n-a), new String('.', n));

                m++;b+=2;a+=2;

            }

        b = 0;

        a = 0;

        for (int i = 0; i < (n-1)/2; i++)

            {

                Console.WriteLine("{0}{1}{0}", new string ('.', b), new string('*', ((n*2))-a));

                b++;a+=2;

            }

    }

}