Hi !!
I would say proper = 1/ 2/ 3/ 4
improper = 5 and 6
For n°3, I don't really know how it is in the States ........
I hoped I helped somehow ....
It is a steep angle shot performed from the rear court to your opponent’s fore court.
They keep you alive
It keeps you in shape
It can help you be strong and not do addictive things
Human dissection to view body organs began around 1600 bc.
