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