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 = yourFunction2(imena);

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

    }

​

    public static IEnumerable<string> yourFunction2(List<string> imena)

    {

        return imena.Append("Francis").Append("Matea");

    }

}