Sunlight

using System;

    class Program
    {
        static void Main()
        {
            int n = int.Parse(Console.ReadLine());

            Console.WriteLine("{0}*{0}", new string('.', (3*n)/2));

            int firstDots = 0;
            int middleDots = ((3*n)-3)/2;

            for (int i = 1; i <= n-1; i++)
            {
                firstDots += 1;
                middleDots -= 1;
                Console.WriteLine("{0}*{1}*{1}*{0}", new string ('.', firstDots), new string ('.', middleDots));
            }

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

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

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

            int dotsFirst = n;


            for (int i = 1; i <= n-1; i++)
            {
                dotsFirst -= 1;
                middleDots += 1;
                Console.WriteLine("{0}*{1}*{1}*{0}", new string('.', dotsFirst), new string ('.', middleDots - 1));
            }

            Console.WriteLine("{0}*{0}", new string('.', (3 * n) / 2));

        }
    }