using System;

using System.Threading;

using System.Collections.Generic;

public class Program

{

    private static int WorkCount = 10;

    public static void Main()

    {

          var threads = new List<Thread>();

            for (int p = 0; p < 50; p++)

            {              

                threads.Add(new Thread(Parse));

            }

            // Start them all

            var inc = 0;

            foreach (var thread in threads)

            {

                thread.Start(inc);

                inc++;

            }

            // Wait for completion

            foreach (var thread in threads)

            {

                thread.Join();

            }

    }

 private static void Parse(object arg)

        {

      Console.WriteLine();

      Console.WriteLine(arg);

            var FromPage = (int)arg * WorkCount;

            var ToPage = FromPage + WorkCount;

            for (var i = FromPage; i < ToPage; i++)

            {

                Console.Write(i + " ");

            }

        }

}