using System;

using System.Collections.Generic;

using System.Linq;

public class Program

{

    public static void Main()

    {

        var a = new List<int>() {1, 5, 7, 2, 234, 53, 65, 23, 89, 43, 67, 100};

        // Get some shit

        var res = from elem in a where elem < 20 && elem % 2 == 0 select elem;

        // Print them out

        foreach(var i in res.ToList()) { Console.WriteLine(i + ", "); }

    }

}