RockLq

using System;
class RockLq
{
    static void Main()
    {
        int n = int.Parse(Console.ReadLine());
        int outer2 = n-4;
        int inner2 = 1;
        int counter = 2;

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

        for (int i = 0; i < n/2; i++)
        {
            int inner1 = n + counter;
            Console.WriteLine("{0}*{1}*{0}", new string('.',(3*n-2-inner1)/2), new string('.', inner1));
            counter += 4;

        }

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

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

            Console.WriteLine("*{0}*{1}*{2}*{1}*{0}*", new string('.', outer2), new string('.', inner2), new string('.', n));
            outer2 -= 2;
            inner2 += 2;
        }
        for (int i = 0; i < n-1; i++)
        {
            Console.WriteLine("{0}*{1}*{0}", new string('.', n-1-i), new string('.', n+2*i));
        }
        Console.WriteLine("{0}", new string('*', 3*n));


    }
}