Did anyone else see the changing letters in this POTUS tweet?

https://twitter.com/realDonaldTrump/status/1239394598667071488

Here is the string of letters I got when I frame stepped through the video.

IHFHCEIKPRGITVGIKKMEGGIQSACJLEGRTKMVXQKETGBGIVITQ

>>8440323

It looks like I missed an entire sequence as "Practice Good Hygiene" spun up. I did not start noting letters until Practice good hygiene was going away.