There are three blocks. We call them A, B and C. Blocks C and A are to the right of B. Block A has one medium yellow square. Block B contains three medium black squares. Below medium black square number two and medium black square number three is medium black square number one. Below medium black square number three is medium black square number two. And block C has a medium blue square.
What is to the left of the yellow object? a medium black square number two or a medium black square number three?
medium black square  number two medium black square  number three both of them none of them