We have three blocks. We call them A, B and C. Two medium yellow squares are in block A. This block also contains one medium blue square. Below the medium blue square is medium yellow square number two. Below the medium blue square and medium yellow square number two is medium yellow square number one. Then, we have block B which contains one medium yellow square. Finally, we have block C above block A. Block B is below it. It contains two medium black squares. Below medium black square number two and a medium blue square there is medium black square number one. Medium black square number two is below the medium blue square.
Which object is below a medium blue square? medium black square number one or medium black square number two?
medium black square  number one medium black square  number two both of them none of them