using System;

using System.Collections.Generic;

public class Program

{

    #nullable enable

    public static void Main()

    {

           SortedList<string, string> sortedStringList = new SortedList<string, string>();

​

            sortedStringList.Add("test", "test");

            sortedStringList.Add("testTwo", "testTwo");

            sortedStringList.Add("testThree", "testThree");

            sortedStringList.Add("testFour", "test"); // this wiill be the second item in the list

            foreach(KeyValuePair<string, string> sortedString in sortedStringList)

            {

                Console.WriteLine($"{sortedString.Key}: {sortedString.Value}");

            }

    }

}