top,left
top,center
top,right
top,left,border
top,center,border
top,right,border

bottom,left
bottom,center
bottom,right
bottom,left,border
bottom,center,border
bottom,right,border

left,top
left,center
left,bottom
left,top,border
left,center,border
left,bottom,border

right,top
right,center
right,bottom
right,top,border
right,center,border
right,bottom,border