https://docs.google.com/document/d/1xcNao2zln7Urm6Ru3_hhyFbvxgoNeoJvzc0fXHk56_s/edit?usp=sharing
Pages 4-5
https://drive.google.com/open?id=1syR0bFoDvEGenY8xtcqKlX4v96gO_o1avJfJ1JEG5rw