- 8, 9, 10, 10, 9, 11, // back, upper
- 12, 13, 14, 14, 13, 15, // back, lower
- 16, 17, 18, 18, 17, 19, // top, upper
- 20, 21, 22, 22, 21, 23, // top, lower
- 24, 25, 26, 26, 25, 27, // bottom
- 28, 29, 30, 30, 29, 31, // left, upper
- 32, 33, 34, 34, 33, 35, // left, lower
- 36, 37, 38, 38, 37, 39, // right
+ 8, 9, 10, 10, 9, 11, // back
+ 12, 13, 14, 14, 13, 15, // top, upper
+ 16, 17, 18, 18, 17, 19, // top, lower
+ 20, 21, 22, 22, 21, 23, // bottom
+ 24, 25, 26, 26, 25, 27, // left, upper
+ 28, 29, 30, 30, 29, 31, // left, lower
+ 32, 33, 34, 34, 33, 35, // right, upper
+ 36, 37, 38, 38, 37, 39, // right, lower