ex6

http://164.115.27.97/digital/files/original/303892dafba964c462f47a7a8d3916b6.pdf?fbclid=IwAR063CrX6XMo73WO_wTlmfvfC4yXyoxwSO6M2cvvy-uK6rKhfdTaS-QkkSM

https://drive.google.com/file/d/1foO8e2Wj2eKDDggavF9sBlGHMXJ8863B/view?usp=sharing