Good old two - might need this if your getting blocked, or to just change it up. Add this with a "retard" slap against your chest for a stutter two... Middle goes in for quick, but doesn't jump - then jumps for a two... Fakes blocks usually - not recommended though
Thirty one - on a basketball court it's on the edge of the bubble - half way between a middle and outside, but this is a low quick ball - almost like a shoot.
Same spot as a thirtyone, however higher and slower paced, called a thirty two.
Four - boring outside hit, nice and high and outside - good for a hitter who can control the pace of a game. Good for getting over blockers and giving your hitter options.
If you shake the hand it can be a back four... I'd stay away from that though, back twos are much better.