We have two blocks, A and B. There is a medium blue square in block A. A medium black square is touching the bottom edge of this block. It is below the medium blue square. Block B is above block A. It contains four 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. It is below medium black square number four. Medium black square number one is below medium black square number four. It is below medium black square number three and medium black square number two.
Which object is above a medium black square? medium black square number four or medium black square number two?
medium black square  number four medium black square  number two both of them none of them