We have two blocks, A and B. There is a medium black square in block A. This block also has a medium blue square. The medium blue square is below the medium black square. Below block A we have block B. It has two medium black squares. Medium black square number one is below a medium blue square. It is below medium black square number two. The medium blue square is below medium black square number two.
Which object is above a medium black square? the medium black square that is in block A or medium black square number two?
the medium black square  that is in block A medium black square  number two both of them none of them