https://docs.google.com/presentation/d/1AfnYg_AK4cW8NgNWtro7B_m4aJxoWFsu/edit?usp=sharing&ouid=101339937729654948686&rtpof=true&sd=true

https://docs.google.com/presentation/d/1qb4NiTwSXPjem0gjRyfWte65Z24cn7q6/edit?usp=sharing&ouid=101339937729654948686&rtpof=true&sd=true