There are two blocks. We call them A and B. Block A is to the right of B. Block A has a medium blue square. Block B contains two medium black squares. One medium blue square is also in this block. It is below medium black square number two and medium black square number one. It also contains a medium yellow square. The medium yellow square is below medium black square number two and medium black square number one.. Below medium black square number two is medium black square number one.
Which object is to the left of a medium blue 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