There is some genius in there. They were great.
(how do they do that?)
https://youtu.be/Xa_fVWZybTQ?list=PLdJ0f4yFJP0O-8Uo8_n15-IhdDW8hIGqh
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https://youtu.be/qAw5E7HV1y8?list=PLdJ0f4yFJP0O-8Uo8_n15-IhdDW8hIGqh
https://www.youtube.com/watch?v=vyvBgD3XQnY&list=PLdJ0f4yFJP0O-8Uo8_n15-IhdDW8hIGqh&index=11&pp=iAQB
https://www.youtube.com/watch?v=lSl_RkDM2tM&list=PLdJ0f4yFJP0O-8Uo8_n15-IhdDW8hIGqh&index=14