using System;

using System.Linq;

​

public class Program

{

    public static void Main()

    {

        string[] letters = ["y", "X", "Z"];

        Console.WriteLine(String.Join(", ", letters.Order(StringComparer.CurrentCulture)));

        Console.WriteLine(String.Join(", ", letters.Order(StringComparer.CurrentCultureIgnoreCase)));

    }

}