B equals previous A
A = 0
B = 0

B       A
0           0
0           0
0           0
0           0
0           0
0           0
0           0
#.inf

I'll be honest, I really don't know if the hypercube could represent B A.
I just think B A could work because  I have always thought of the actual cube
in the hypercube is between the empty space of the larger and smaller cubes.

The hyper cube