Extended box

(2x,0)(2x,8)(2x,4)(0,2x)(8,2x)(4,2x)
3 ball extended box
Capacity	3
Period	12
Full period	12
Orbits	3
Composition	Prime
States	(1,0)(1,0)(1,0) - (2x,0) (1,1)(1,0) - (2x,8) (1,1)(0,0)(0,0)(0,1) - (2x,4) (0,1)(0,1)(0,1) - (0,2x) (1,1)(0,1) - (8,2x) (1,1)(0,0)(0,0)(1,0) - (4,2x)
Ladder diagram
Stack notation	(1x,0)(2x,3)(2x,2)*
Anagrams	(8,2x)(2x,4)(0,2x)(2x,8)(4,2x)(2x,0) (8,2x)(2x,8)(0,2x)(2x,0)(4,2x)(2x,4) (8,2x)(4,2x)(2x,0)(2x,8)(4,2x)(2x,0)

 

(2x,0)(c,2x)(2x,8)(2x,4)(0,2x)(2x,c)(8,2x)(4,2x)
4 ball extended box
Capacity	4
Period	16
Full period	16
Orbits	4
Composition	Prime
States	(1,0)(1,0)(1,0)(1,0) - (2x,0) (1,1)(1,0)(1,0) - (2x,c) (1,1)(1,0)(0,0)(0,0)(0,0)(0,1) - (2x,8) (1,1)(0,0)(0,0)(0,1)(0,1) - (2x,4) (0,1)(0,1)(0,1)(0,1) - (0,2x) (1,1)(0,1)(0,1) - (c,2x) (1,1)(0,1)(0,0)(0,0)(0,0)(1,0) - (8,2x) (1,1)(0,0)(0,0)(1,0)(1,0) - (4,2x)
Ladder diagram
Stack notation	(1x,0)(2x,4)(2x,3)(2x,2)*

  "Extended box" may refer to either of these two kinds of box variations:

• A double box (or triple box, etc.)
• A box pattern where throws are made going to one side until all the objects are on that side and the other hand is empty, such as (2x,0)(2x,4)*, (2x,0)(2x,8)(2x,4)*, or (2x,0)(2x,c)(2x,8)(2x,4)*. This type of pattern can be used as an exercise to prepare for a normal box with one more object.

Video: 4 ball extended box by Falco Scheffler

Double box Siteswap: (4x,2x)(4,2x)*

Triple box Siteswap: (4x,2x)(4x,2x)(4,2x)*