Dictionary

using System;
using System.Collections.Generic;
using System.Linq;

namespace DEMO_Exam_Dictionary
{
    class Program
    {
        static void Main(string[] args)
        {
            string[] wordAndExplain = Console.ReadLine().Split(" | ").ToArray();
            string command = string.Empty;
            var words = new Dictionary<string, List<string>>();

            if ((command = Console.ReadLine()) == "End") return;
            for (int i = 0; i < wordAndExplain.Length; i++)
            {
                string[] wordAndDefinition = wordAndExplain[i].Split(": ").ToArray();
                string wordName = wordAndExplain[0];
                string wordExplain = wordAndExplain[1];
                if (!words.ContainsKey(wordName))
                {
                    words.Add(wordName, new List<string>());
                }
                else words[wordName].Add(wordExplain);
            }
            if ((command = Console.ReadLine()) == "List")
            {
                foreach (var word in words.OrderByDescending(x => x))
                {
                    Console.WriteLine($"{word.Key}:");

                    foreach (var item in words.OrderBy(x => x))
                    {
                        Console.WriteLine($" -{string.Join(" ", item)}");
                    }
                }
            }
        }
    }
}