05. Short Words Sorted

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ShortWordsSOrted
{
    class Program
    {
        static void Main(string[] args)
        {

            List<string> input = Console.ReadLine()
                .ToLower()
                .Split(new char[] { '.', ',', ':', ';', '(', ')', '[', ']', '"', '\'', '\\', '/', '!', '?', ' ' }
                , StringSplitOptions.RemoveEmptyEntries).Where(item => item.Length < 5).Distinct().OrderBy(x=> x)
                .ToList();


            Console.Write(string.Join(", ", input));
            Console.WriteLine();
        }
    }
}