using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace _20160617_Exam_zad_5
{
    class Program
    {
        static void Main(string[] args)
        {

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

            int width = 5 * N;
            int pointsLeftRight = N;
            int pointsMiddle = 3 * N;

            Console.WriteLine("{0}{1}{0}",
                new string ('.',pointsLeftRight),
                new string ('*',3*N));

            pointsLeftRight--;

            for (int row = 1; row <= N-1; row++)
            {
                Console.WriteLine("{0}*{1}*{0}",
                new string('.', pointsLeftRight),
                new string('.', pointsMiddle));
                pointsLeftRight--;
                pointsMiddle +=2;
            }
            Console.WriteLine(new string('*',width));
            pointsLeftRight = 0;
            for (int row = 1; row <= 2*N; row++)
            {
                pointsLeftRight++;
                pointsMiddle -= 2;
                Console.WriteLine("{0}*{1}*{0}",
                new string('.', pointsLeftRight),
                new string('.', pointsMiddle));

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


        }
    }
}