Regex to find the last word of string after the word ending with "ing" and before the fullstop (.)

Hi,

I have the following string "This is my text string I know it. I am loving it I know." I need to find the last word of string after the word ending with "ing" and before the fullstop (.) so in my sample I need the output as "it" and "know". Please help.

#region Using Directives

using System;
using System.Text.RegularExpressions;

#endregion

public class Example
{
    static void Main()
    {
        string input = "This is my text string I know it. I am loving it I know.";
        string regex = @"(\w+)(?=(?<=((?<=([\w]+((?<=\w)ing\b)\s)).+?(?=\.)))\.)";
        var matches = Regex.Matches(input, regex);
        foreach (var match in matches)
        {
            Console.WriteLine(match);
        }
        Console.ReadLine();
        //Output:
        //it
        //know

    }
}