using System;

using System.Collections.Generic;

using System.Linq;

public class Program

{

    public static void Main()

    {

        var firstList = new List<string> {"one", "two", "tree"};

        var secondList = new List<string> {"een", "twee", "drie"};

        var q = firstList.SelectMany(x=> secondList, (x, y) => x+y).ToList();

        q.ForEach(x => Console.WriteLine(x));

    }

}