1)
https://www.youtube.com/watch?v=TaPonbPUQ_I
2) -
https://www.youtube.com/watch?v=3sK9ceGtry8
3) E
https://www.youtube.com/watch?v=kRwfx2Ktzx8
4)
https://www.youtube.com/watch?v=PWY8iDiCjUA

?