*
stacks full
stacks full
stacks full
stacks full
stacks full
stacks full
stacks full
stacks full
stacks full
stacks full
stacks full
N M L K J I H G F E D C B A 9 8 7 6 5 4 3 2 1 0  -- stack 2
o n m l k j i h g f e d c b a * * * * *  -- stack 1