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