using System;

using System.Collections.Generic;

using System.Linq;

​

public class Program

{

    public static void Main()

    {

        yourFunction1();

    }

​

    public static void yourFunction1()

    {

        var imena = new List<string>{"Marko", "Ivan", "Miljenko", "Josip", "Luka"};

        var imena2 = imena.Concat(yourFunction2());

        Console.WriteLine(string.Join("\n", imena2));

    }

​

    public static IEnumerable<string> yourFunction2()

    {

        yield return "Francis";

        yield return "Matea";

    }

}