We have two blocks. We call them A and B. Block A has three medium black squares. Medium black square number one is touching the bottom edge of this block. Medium black square number two is below medium black square number three. Medium black square number one is below medium black square number two and medium black square number three. Block B is below block A. It contains two medium black squares. Below medium black square number two there is medium black square number one.
Which object is above a medium black square? the medium black square that is touching the bottom edge of a block or medium black square number three?
the medium black square  that is touching the bottom edge of a block  medium black square  number three both of them none of them