using System;
using System.Collections.Generic;


class Program
{
    static void Main(string[] args)
    {
        int n = int.Parse(Console.ReadLine());
        int airHouse = ((n - 1) / 2) - 1;
        int middleHouse = 1;



        Console.WriteLine("{0}*{0}", new string('.', (n - 1) / 2));
        for (int i = 6; i < n + 2; i = i + 2)
        {
            Console.WriteLine("{0}*{1}*{0}", new string('.', airHouse), new string('.', middleHouse));
            airHouse--;
            middleHouse = middleHouse + 2;
        }
        Console.WriteLine(new string('*', n));
        int outerAir = 1;
        for (int i = 7; i < n ; i = i + 4)
        {
            outerAir++;
        }
        int innerAir = n - (outerAir * 2) - 2;

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