L>    class Program
L>    {
L>        static void Main(string[] args)
L>        {
L>            new Program().Run();
L>        }
L>        public void Run()
L>        {
L>            Monitor.Enter(this);
L>            Console.Write("In");
L>            this.Run();
L>            Monitor.Exit(this);
L>        }
L>    }
L>