We have two blocks. We call them A and B. Block A is to the right of B. Block A contains one medium black square. A medium blue square is touching the bottom edge of this block. This object is below the medium black square. Block B contains two medium black squares. Medium black square number one is below medium black square number two. A medium yellow square is touching the bottom edge of this block. This shape is below medium black square number one and medium black square number two.
What is to the left of the blue object? a medium black square that is in block A or a medium black square number two?
medium black square  that is in block A medium black square  number two both of them none of them