7) https://drive.google.com/file/d/1SWnAb3fnXTyC4Dhhb-XkGJCSCfw9gVUr/view?usp=sharing
8) https://drive.google.com/file/d/19bjmpaYze6gJBhKg3WpMQG8bV1lN_66u/view?usp=sharing