Eiffel Tower

using System;

namespace EiffelTower
{
    internal class Program
    {
        static void Main(string[] args)
        {
            int n = int.Parse(Console.ReadLine());

            for (int row = 0; row < n; row++)
            {
                Console.WriteLine("{0}**{0}", new string('-', n + 2));
            }
            for (int row = 0; row < n - 3; row++)
            {
                Console.WriteLine("{0}****{0}", new string('-', n + 1));
            }
            Console.WriteLine("{0}******{0}", new string('-', n));

            for (int row = 0; row < n - 4; row++)
            {
                Console.WriteLine("{0}**--**{0}", new string('-', n));
            }
            for (int row = 0; row < n - 3; row++)
            {
                Console.WriteLine("{0}**----**{0}", new string('-', n - 1));
            }
            Console.WriteLine("{0}**********{0}", new string('-', n - 2));

            for (int row = n - 3; row > 0; row--)
            {
                Console.WriteLine("{0}**{1}**{0}", new string('-', row), new string('-', (2 * n + 2 - 2 * row)));
            }
            Console.WriteLine("***{0}***", new string('-', (2 * n)));
        }
    }
}