using System;

using System.Text.RegularExpressions;

​

public class Example

{

   public static void Main()

   {

​

      string pattern =  @".*[0-9]{4}/[0-9]{2}/[0-9]{2}";

      string input = @"Susan McClure 2012/12/17

        Mr. Bagi called me in early December and on December 17, 2012.  His spouse is trying to leave him.

        He just called me back to say that Mr. Aulis' office says that the CIF

        Susan McClure 2013/01/04

        Mr. Baigrie was referred to Jeffery Stone.  When Mr. Baigrie called Mr. Stone's office - 

        He is very rude. He constantly wants to tell me all the details

        As an aside, he called here on December 21, 2017 and had fair number of rude comments regarding when I

        This is a very angry man";

      string[] result = Regex.Split(input, pattern, 

                                    RegexOptions.IgnoreCase,

                                    TimeSpan.FromMilliseconds(500));

      for (int ctr = 0; ctr < result.Length; ctr++) {

         Console.Write("{0}", result[ctr]);

      }

      Console.WriteLine();

   }

}