using System;

public class Program

{

    public static void Main()

    {

        var row = 2;

        var columnPerRow = row * 2 - 1;

        var start = columnPerRow / 2;

        var end = start;

        var current = 0;

        do {

            if (current < start || current > end)

                Console.Write(" ");

            else

                Console.Write("*");

            current++;

            if (current > columnPerRow) {

                current = 0;

                start--;

                end++;

                Console.WriteLine();

            }

        } while (start >= 0);

    }

}