Ex.6

1.
https://drive.google.com/file/d/1KDvYAhYbXwGGF2LHfcx43aOmOS6Fp3Gj/view?usp=sharing

2.
https://drive.google.com/file/d/19LOLaCwrmYSaRQdmbOS78lG6pgUEfg5q/view?usp=sharing