using System;

public class Program

{

    public static void Main()

    {

        string s1 = "My name is X Y Z";

        Console.WriteLine(s1);

        var s2 = ReverseWord(s1);

        Console.WriteLine(s2);

​

    }

    private static string ReverseWord(string txt)

    {

        return "CHANGE";

    }

}