What are the numbered sets in volleyball?

Here are the numbered sets in volleyball:

Outside Hits:

Four (4) - Set inside the antenna but still high.

Five (5) - Very high set past the antenna.

Middle Hits:

Two (2) - High set right in front of the setter.

One (1) - Very low set right in front of the setter.

Three (3) - Low set about three to four feet from the setter between Outside and Middle hitter spots.

Right Side Hits:

Nine (9) - High back set to almost to the antenna.

Six (6) - Lower back set more towards the inside of the antenna than a nine.

Back Hits:

Pike - A set to the middle back position

"A" - A set to the right back position.

"D" - A set to the left book position.