We have three blocks. We call them A, B and C. Block A contains a medium yellow square. Block B is above block A. It has one medium blue square and a medium black square. Below the medium black square there is the medium blue square. To the left of block A there is block C. It contains one medium yellow square and a medium black square. The medium yellow square is touching the bottom edge of this block. It is below the medium black square.
Is there any medium black squares to the left of the yellow square which is below a medium blue square?