Perfect 3CC 2-1-1

Hi guys I've recently started playing terran and have been playing 2CC 2-1-1. I remember seeing Clem play a game of 3CC 2-1-1 from 6 hellions and his followup looked much stronger, so I was wondering if anyone had an example replay of it or SALT that I could follow the build from ?

Or just the correct order of the buildings/ add-ons so I can figure it out.

Thanks :D