using System;

​

namespace Boat

{

    class Boat

    {

        static void Main()

        {

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

            char asterix = '*';

            char dot = '.';

            int asterixs = 1;

            bool mid = false;

​

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

            {

                Console.WriteLine("{0}{1}{2}", new string(dot, n - asterixs), new string(asterix, asterixs), new string(dot, n));

​

                if (asterixs >= n)

                {

                    mid = true;

                }

                if (mid)

                {

                    asterixs -= 2;

                }

                else

                {

                    asterixs += 2;

                }

            }

            int body = n*2;

            int dots = 0;

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

            { 

                Console.WriteLine("{0}{1}{0}", new string(dot,dots), new string(asterix, body));

                if (asterixs >= n*2)

                {

                    mid = true;

                }

                if (mid)

                {

                    body -= 2;

                    dots += 1;

                }

            }

        }

    }

}

​