https://docs.google.com/document/d/1ba0qeQ5HzrQelW5HPgpg5kwgOxOJ3t_RCQtfdwLkWbM/edit

https://docs.google.com/document/d/1LgKKTB_TitgiGTnJ_4ZJOSaQAeq_NToVE3n3VeEmX9M/edit?usp=sharing