using System;

public class Program

{

    public static void Main()

    {

        int counter = 4;

        string start = "XOXOXOXO";

        string second = "OXOXOXOX";

        while (counter < 5)

     {

         Console.WriteLine(start);

         Console.WriteLine(second);

         counter = counter -1;

    } 

        Console.WriteLine("Press enter to continue....");

}

}