7) https://drive.google.com/file/d/1x_g5BybK_TBja1Bfr9FxOyzFJs8ypAZk/view?usp=sharing
8) https://drive.google.com/file/d/1Lgc-celPmS5SMSfcxEvJWZwDRavk64-r/view?usp=sharing