using System;

using System.Collections.Generic;

using Newtonsoft.Json;

public class Program

{

    public static void Main()

    {

        Dictionary<string, List<char>> dict= new Dictionary<string, List<char>>();

        dict.Add("CarriageReturn", new List<char>() { '\r' });

        Console.WriteLine(JsonConvert.SerializeObject(dict));

    }

}