We have three blocks. We call them A, B and C. Block A has two medium black squares. Below medium black square number two and a medium yellow square is medium black square number one. Below the medium yellow square there is medium black square number two. Block B is to the left of block A. It has one medium yellow square. To the right of block B there is block C. It has two medium yellow squares and two other medium black squares. Below medium yellow square number two , medium black square number one and medium black square number two is medium yellow square number one. Medium yellow square number two is below medium black square number two. Below medium black square number two is medium black square number one.
Which object is to the left of a medium black square? the medium yellow square which is in block B or medium yellow square number two?
the medium yellow square  which is in block B medium yellow square  number two both of them none of them