Semester II

https://drive.google.com/file/d/0B9hDwRfo8-JrelVJWFo5N0ZfdDg/view?usp=sharing

Semester IV

https://drive.google.com/file/d/0B9hDwRfo8-JrUE5feElCcmdPVnc/view?usp=sharing

Semester VI

https://drive.google.com/file/d/0B9hDwRfo8-JrLUwwbjBSeV9obHM/view?usp=sharing