Figure.Plane

using System;
class Plane
{
    static void Main(string[] args)
    {
        int n = int.Parse(Console.ReadLine());

        int widht = n * 3;
        int height = (n * 3) - (n / 2);

        char dot = '.';
        char stars = '*';

        int leftDost = (widht - 1) / 2;

        // first row
        Console.WriteLine("{0}{1}{0}",new string(dot,leftDost),new string (stars,1));
        // end first row

        // second row
        int secondOutDots = leftDost-1;
        int secondInnerDots = 1;
        int yellowRow = (n / 2) + 2;
        for (int i = 0; i <yellowRow; i++)
        {
            Console.WriteLine("{0}*{1}*{0}",
                new string(dot,secondOutDots), new string(dot, secondInnerDots));
            secondOutDots--;
            secondInnerDots += 2;
        }
        // end second

        // third row
        int redRow = n / 2 - 1;
        int thirdDots = n-4;
        int thirdInnerDots = secondInnerDots+2;

        for (int i = 0; i < redRow; i++)
        {
             Console.WriteLine("{0}*{1}*{0}",
                 new string (dot,thirdDots),new string (dot,thirdInnerDots));
             thirdDots -= 2;
             thirdInnerDots += 4;
        }
        // end

        // four row
        Console.WriteLine("*{0}*{1}*{0}*",new string (dot,n-2),new string (dot,n));
        // end four

        // five row
        int fiveDots = n - 4;
        int fiveSecDots =1;
        for (int i = 0; i < redRow; i++)
        {
            Console.WriteLine("*{0}*{1}*{2}*{1}*{0}*",
                new string (dot,fiveDots),
                new string (dot,fiveSecDots),
                new string (dot,n));
            fiveDots -= 2;
            fiveSecDots+=2;
        }
        // end

        // six row
        int sixDots = n - 1;
        int innerSixDots = n;
        for (int i = 0; i < n-1; i++)
        {
            Console.WriteLine("{0}*{1}*{0}",
                new string(dot, sixDots), new string(dot, innerSixDots));
            sixDots--;
            innerSixDots += 2;

        }
        // end six
        Console.WriteLine("{0}",new string('*',widht));
    }
}