using System;

using System.Collections.Generic;

using System.Linq;

public class Program

{

    public static void Main()

    {

        var list1 = new List<string>();

        list1.Add("test1");

        var list2 = new List<string>();

        list2.Add("test2");

        list1 = list2;

        Console.WriteLine(list1.First());

    }

}