using System;

public class Program

{

    public static void Main()

    {

        string variable = null;

        Console.WriteLine("Iteration 1");

        try

        {

            Console.WriteLine("Iteration 2");

            Console.WriteLine(variable.ToString());

        }

        catch(Exception ex)

        {

            Console.WriteLine("Iteration 3");

            try

            {

                Console.WriteLine(variable.ToString());

            }

            catch(Exception ex2)

            {

                Console.WriteLine("Iteration 7");

            }

            Console.WriteLine("Iteration 4");

        }

        finally

        {

            Console.WriteLine("Iteration 5");

        }   

        Console.WriteLine("Iteration 6");

    }

}