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

namespace Problem_03___Illuminati_Lock__PB___17_January_2016_
{
    class Program
    {
        static void Main(string[] args)
        {
            var n = int.Parse(Console.ReadLine());
            var height = n + 1;
            var width = 3 * n;


            //first
                Console.Write(new string('.', n));
                Console.Write(new string('#', n));
                Console.WriteLine(new string('.', n));

            // second
            var pointsSecond = n - 2;
            Console.Write(new string('.', pointsSecond));
            Console.Write(new string('#', 3));
            Console.Write(new string('.', pointsSecond));
           Console.Write(new string('#', 3));
            Console.WriteLine(new string('.', pointsSecond));

            //third
            var pointsBeggining = pointsSecond;
            var pointsMiddle = 2;

            for (int i = 0; i < (height - 2) / 2; i++)
            {
                Console.Write(new string('.', pointsBeggining));
                Console.Write("##");
                Console.Write(new string('.', pointsMiddle));
                Console.Write('#');
                Console.Write(new string('.', pointsSecond));
                Console.Write('#');
                Console.Write(new string('.', pointsMiddle));
                Console.Write("##");
                Console.WriteLine(new string('.', pointsBeggining));
                pointsBeggining -= 2;
                pointsMiddle += 2;


                // fourth
                Console.Write(new string('.', ));
                Console.Write("##");
                Console.Write(new string('.', ));
                Console.Write('#');
                Console.Write(new string('.', pointsSecond));
                Console.Write('#');
                Console.Write(new string('.',));
                Console.Write("##");
                Console.WriteLine(new string('.',));


                //last line
                Console.Write(new string('.', n));
                Console.Write(new string('*', n));
                Console.WriteLine(new string('.',n));
            }
        }
    }
}