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