We have three blocks, A, B and C. Block C is below block A and to the left of block B. Block A contains two medium black squares. Medium black square number one is below medium black square number two. Block B has a medium yellow square. And block C has a medium yellow square. It also contains one medium blue square. The medium blue square is below the medium yellow square.
Which object is above a medium square? medium black square number two or medium black square number one?
medium black square  number two medium black square  number one both of them none of them