There are three blocks, A, B and C. Block C is above A. Block A is above B. Block A has a medium blue square and one medium black square. Below the medium black square there is the medium blue square. Block B has two medium yellow squares. Medium yellow square number one is below medium yellow square number two. This block also contains one medium blue square. This block also has one medium black square. It is below the yellow shape which is below medium yellow square number two. This object is below medium yellow square number two. Below medium yellow square number two and the medium black square is the medium blue square. And block C has a medium yellow square.
Is there any medium black squares above the blue square which is above a medium square?