[] = box
[ ][ ][ ][ ][ ][ ][ ]
[ ][ ][ ][ ][ ][ ][ ]
[ ][ ][ ]45[ ][ ][ ]
[ ][ ]64[ ][ ][ ][ ]
[ ][ ][ ]??[ ][ ][ ]
[ ][ ][ ][ ][ ][ ]12
[ ][ ][ ][ ][ ][ ][ ]
WHAT is the '??'
(I imagine this would work better if you were to draw it out or copy and paste it into a text document at it in your preferred browser)