using System;
using System.Linq;

public class Test
{
    static void Main()
    {
        char[] chrs = { 'A', 'B', 'C'};
        char[] chrs2 = { 'X', 'Y', 'Z' };
        char[] chrs3 = { 'J', 'K', 'L' };
        var pairs = from ch1 in chrs
                    from ch2 in chrs2
                    from ch3 in chrs3
                    select ch1 + " " + ch2 + " " + ch3;
        Console.WriteLine("For ABC and XYZ: ");
        foreach (var p in pairs)
            Console.WriteLine(p);
        Console.WriteLine();

        Console.WriteLine("For D and W: ");
        chrs = new char[] { 'D' };
        chrs2 = new char[] { 'W' };
        chrs3 = new char[] { 'S' };
        foreach (var p in pairs)
            Console.WriteLine(p);
    }
}