We have three blocks. We call them A, B and C. Block C is to the left of B. Block B is below A. Block A contains a medium black square. Block B has two medium black squares. Medium black square number one is below a medium yellow square and medium black square number two. Medium black square number two is below the medium yellow square. Block C contains a medium blue square.
What is to the right of the blue thing? a medium yellow square or a medium black square?
medium yellow square  medium black square  both of them none of them