using System;

using System.Collections.Generic;

public class Program

{

    public static void Main()

    {

        foreach(var a in GetSomeInts())

            Console.WriteLine(a);

    }

    public static IEnumerable<int> GetSomeInts() 

    {

        Console.WriteLine("Start");

        yield return 1;

        yield return 12;

        yield return 3;

        Console.WriteLine("Mid");

        yield return 6;

        yield return 8;

        yield return 3;

        yield return 311;

        Console.WriteLine("End");

    }

}