We have three blocks. Lets call them A, B and C. There are two medium black squares in block A. Below medium black square number two there is medium black square number one. Block B is to the left of block A. It contains one medium yellow square and a medium blue square. Below the medium blue square is the medium yellow square. Above block B there is block C. It contains one medium yellow square. This block also has one medium blue square. Below the medium yellow square is the medium blue square.
Which object is below a medium yellow 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