Semester 2:
https://drive.google.com/file/d/1rWZM-q9XV5jlSdC3UnQqhVvBWJqo5TB6/view?usp=sharing
Semeter 4 A:
https://drive.google.com/file/d/1O6068xL4Vco3IV3ye-iwUc3srOyPumnu/view?usp=sharing
Semester 4 B:
https://drive.google.com/file/d/1fXMsGrdthMUgFEOBURibzplEnT21H7te/view?usp=sharing
Semester 6 :
https://drive.google.com/file/d/1L6RJNUPjAduBwBccoC4QjJutK8uUPLrk/view?usp=sharing