using System;

public class Program

{

    public static void Main()

    {

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

        //top

        Console.Write(new String('*',num*2));

        Console.Write(new String('.',num));

        Console.WriteLine(new String('*',num*2));

        for(var i=2; i < num; i++)      //middle

        {

            Console.Write("*");

            Console.Write(new String('/',num*2-2));

            Console.Write("*");

            if ( i == num-1/2 )

            {

                Console.Write(new string('/',num));

            }

            else

            {

            Console.Write(new string('.',num));

            }

        Console.Write("*");

            Console.Write(new String('/',num*2-2));

            Console.WriteLine("*");

        }

        Console.Write(new String('*',num*2));

        Console.Write(new String('.',num));

        Console.WriteLine(new String('*',num*2)); // bottle

​

​

​

​

​

​

    }

}