using System;

​

namespace Stringy

{

    public class Program

    {

        public static void Main()

        {

            string testValue1 = "first name";

            string testValue2 = "First Name";

            string testValue3 = "FIRST NAME";

            Console.WriteLine(testValue1.ToLower());

            Console.WriteLine(testValue2.ToLower());

            Console.WriteLine(testValue3.ToLower());

        }

    }

}