51:
52:
53: https://thisvid.com/videos/bsv-53/
54:
55:
56: Pt1 https://www.youtube.com/watch?v=PwviUq8K5d8&t=949s
56: Pt2 https://www.youtube.com/watch?v=R9DeAn2XUdU
57:
58:
59: https://youtu.be/HuTbxh2oGww?si=PX6MgkGg2EgrS91B
60:
61:
62:
63:
64:
65:
66: https://www.youtube.com/watch?v=V8uQBDnYS6g
67: https://www.youtube.com/watch?v=4LFl2rnymcM