Plane (100/100)

using System;

namespace Plane
{
    class Plane
    {
        static void Main()
        {
            int n = int.Parse(Console.ReadLine());
            int width = 3*n;
            int height = (3*n)-(n/2);
            char zvezda = '*';
            char tochka = '.';
            int k = (width/2) - 1;
            int m = 1;
            int z = n - 1;
            int x = n;

            for (int i = 1; i <= height; i++)
            {
                if (i==1)
                {
                    Console.Write(new string(tochka,width/2));
                    Console.Write(zvezda);
                    Console.Write(new string(tochka,width/2));
                    Console.WriteLine();
                }
                else if (i > 1 && i <= n+1)
                {
                    if (m < n+2)
                    {
                        Console.Write(new string(tochka, k));
                        Console.Write(zvezda);
                        Console.Write(new string(tochka, m));
                        Console.Write(zvezda);
                        Console.Write(new string(tochka, k));
                        Console.WriteLine();
                        k--;
                        m += 2;
                    }
                    else
                    {
                        Console.Write(new string(tochka, k));
                        Console.Write(zvezda);
                        Console.Write(new string(tochka, m));
                        Console.Write(zvezda);
                        Console.Write(new string(tochka, k));
                        Console.WriteLine();
                        k-=2;
                        m += 4;
                    }
                }
                else if (i == n+2)
                {
                    Console.Write(zvezda);
                    Console.Write(new string(tochka,n-2));
                    Console.Write(zvezda);
                    Console.Write(new string(tochka,n));
                    Console.Write(zvezda);
                    Console.Write(new string(tochka,n-2));
                    Console.Write(zvezda);
                    Console.WriteLine();
                    k = n - 2 - 2;
                    m = 1;
                }
                else if (i > n+2 && i <= n+2+(n/2)-1)
                {
                    Console.Write(zvezda);
                    Console.Write(new string(tochka,k));
                    Console.Write(zvezda);
                    Console.Write(new string(tochka,m));
                    Console.Write(zvezda);
                    Console.Write(new string(tochka,n));
                    Console.Write(zvezda);
                    Console.Write(new string(tochka,m));
                    Console.Write(zvezda);
                    Console.Write(new string(tochka,k));
                    Console.Write(zvezda);
                    Console.WriteLine();
                    k -= 2;
                    m += 2;
                }
                else if (i > n+2+(n/3) && i < height)
                {
                    Console.Write(new string(tochka,z));
                    Console.Write(zvezda);
                    Console.Write(new string(tochka,x));
                    Console.Write(zvezda);
                    Console.Write(new string(tochka,z));
                    Console.WriteLine();
                    z--;
                    x += 2;
                }
                else if (i == height)
                {
                    Console.WriteLine(new string(zvezda,width));
                }
            }
        }
    }
}