using System;

        using System.Linq;

using System.Text.RegularExpressions;           

public class Program

{

    public static void Main()

    {

         string input = ": hello; world; 2019>how?.are,you. .i'm good}and-you[?ok";

​

         var results1 = Regex.Replace(input, @"[\s\w]",Environment.NewLine)

                           .Split(new []{Environment.NewLine},StringSplitOptions.RemoveEmptyEntries);

​

         Console.WriteLine("First");

         foreach (var result in results1)        

            Console.WriteLine(result);

​

         var results2 = Regex.Matches(input, @"[!\""#$%&'()*+,-./:;<=>?@\[\\\]^_`{|}~]*")

                             .OfType<Match>()

                             .Where(x => !string.IsNullOrWhiteSpace(x.Value))

                             .Select(x => x.Value);

          Console.WriteLine("Second");

         foreach (var result in results2)

            Console.WriteLine(result);

    }

}