https://docs.google.com/document/d/1i1D6oT8NNhR_xwiO5xYhPRp261B6gZLrkdTiHB0-iII/edit?usp=sharing

https://docs.google.com/document/d/1dsRxSKB9t7e_jBow4GWcynIr5ygyyIQEwSl1u1rZYq4/edit?usp=sharing