IBJJF Rules

So was looking at the IBJJF Rules and looking at the illegal moves section

http://ibjjf.org/wp-content/uploads/...-Book-v2.0.pdf (page 24)

Why on earth is move 6 illegal? Also 7 and 8 as well I don't get (7 cause he is like cranking neck in a way)
And 5 a standing guillotine....wtf?

Can anyone clarify these? Lol dont get some of them

On closer inspection is 6 illegal because he is using the sleeve to finish?

Look at the chart on the previous page. The numbers match up to those items. Only some are shown and most are only illegal for kids.

So silly, I really like NAGA no-gi rules: all submissions are legal, positions get 2 points, legit submission attempts get 2 points