I am a newbie in programming specifically C#.. Need help in solving some programming puzzles : I am trying to get the output like this: 4 then 5 then 6 then 7 then 8 then 9 then 10 then 11 then 12 then 13.

The biggest challenge I'm facing is to make sure the word "then" doesn't appear after the last number(13).

Below is my code
    class Program
    {
        static void Main(string[] args)
        {
            int start;
        
           for(start = 4; start<=13; start++)
    
    Console.Write(start +" then " );

           Console.ReadKey();
    }
        
        }

