Add value on value in multithreading

using System.Threading;
using System;
using System.IO;
namespace ThreadingDemo
{
    class Program
    {
        static void Main(string[] args)
        {

            Console.WriteLine("F1           F2              F3");
            Thread thread1 = new Thread(Method1);
            Thread thread2 = new Thread(Method2);
            Thread thread3 = new Thread(Method3);
            thread1.Start();
            thread2.Start();
            thread3.Start();
            Console.Read();
        }
        public static void Method1()
        {
            
            
                for (int i = 1; i < 10; i++)
                {
                    Thread.Sleep(1000);
                    Console.WriteLine("F1 " + i);


                }
            
        }
        static void Method2()
        {
            for (int i = 1; i < 10; i++)
            {
                Thread.Sleep(2000); 
                Console.WriteLine("             F2 " + i);

            }

        }
        static void Method3()
        {
            for (int i = 1; i < 10; i++)
            {
                Thread.Sleep(3000);
                Console.WriteLine("                            F3 " + i);

            }
           
           
        }
    }
}