https://docs.google.com/document/d/1LK1utqmq125pe7JtvjvR3ead12hDpGXEkxzXEw16O-8/edit?usp=sharing

https://docs.google.com/document/d/13KyWdUVhqMIFCJ3EJe_3etoFiQS7zlegrkGzd6PvRHk/edit?usp=sharing