7) https://drive.google.com/file/d/1vnWMuZHTT6tfQ_3b5Gll7u4fbfWgRITg/view?usp=sharing
8) https://drive.google.com/file/d/1yJ5UR-dXUDSpY6R70BT9mhCQxWRX02CQ/view?usp=sharing