+Y                                +Y                                +Z
 -Z +----+----+----+----+----+ +Z  -X +----+----+----+----+----+ +X  -X +----+----+----+----+----+ +X
    |    |    |    |    |    |        |    |    |    |    |    |        |    |    |    |    |    |
    +----+----+----+----+----+        +----+----+----+----+----+        +----+----+----+----+----+   
    |    |    |    |    |    |        |    |    |    |    |    |        |    |    |    |    |    |
    +----+----+----+----+----+        +----+----+----+----+----+        +----+----+----+----+----+   
    |    |    | a  |    |    |        |    |    | b  |    |    |        |    |    | c  |    |    |
    +----+----+----+----+----+        +----+----+----+----+----+        +----+----+----+----+----+   
    |    |    |    |    |    |        |    |    |    |    |    |        |    |    |    |    |    |
    +----+----+----+----+----+        +----+----+----+----+----+        +----+----+----+----+----+   
    |    |    |    |    |    |        |    |    |    |    |    |        |    |    |    |    |    |
    +----+----+----+----+----+        +----+----+----+----+----+        +----+----+----+----+----+   
   -Y                                -Y                                -Z