using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("*          *");

        Console.WriteLine("**        **");

        Console.WriteLine(" **      ** ");

        Console.WriteLine("  **    **  ");

        Console.WriteLine("   **  **   ");

        Console.WriteLine("    ****    ");

        Console.WriteLine("     **     ");

        Console.WriteLine("     **     ");

        Console.WriteLine("     **     ");

        Console.WriteLine("     **     ");

        Console.WriteLine("     **     ");

        Console.WriteLine("     **     ");

    }

}