https://docs.google.com/spreadsheets/d/1-6fQbMIsRjPgpF9xL9jBh7mDqWdNFuUpknK_lv3s-Bc/edit#gid=0-https://www.youtube.com/watch?list=PLvsx6VjPmaYYkEIYWPe53B8IoAoaQOMmP&v=3HYsivZTQ3Y&feature=emb_logo-https://www.youtube.com/watch?v=0sBWxOJZpww&feature=emb_logo