using System;

namespace _03.House
{
    class Program
    {
        static void Main()
        {
            int n = int.Parse(Console.ReadLine());
            for (int i = (n + 1) / 2; i > 1; i--)
            {
                for (int p = 1; p < (n + 1) / 2; p++)
                {
                    if (p == i)
                    {
                        Console.Write("*");
                    }
                    else
                    {
                        Console.Write(".");
                    }
                }
                for (int p = (n + 1) / 2; p > 0; p--)
                {
                    if (p == i)
                    {
                        Console.Write("*");
                    }
                    else
                    {
                        Console.Write(".");
                    }
                }
                Console.WriteLine();
            }
            Console.WriteLine(new string('*', n));
            for (int i = 1; i < (n + 1) / 2 - 1; i++)
            {
                for (int p = 0; p < (n + 1) / 2; p++)
                {
                    if (p == n / 4)
                    {
                        Console.Write("*");
                    }
                    else
                    {
                        Console.Write(".");
                    }
                }
                for (int p = (n + 1) / 2; p < n; p++)
                {
                    if (p == n - n / 4 - 1)
                    {
                        Console.Write("*");
                    }
                    else
                    {
                        Console.Write(".");
                    }
                }
                Console.WriteLine();
            }
            Console.Write(new string('.', n / 4));
            Console.Write(new string('*', n - 2 * (n / 4)));
            Console.Write(new string('.', n / 4));
        }
    }
}