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