Three blocks, called AAA, BBB and CCC exist in the image. Block BBB is behind block CCC. Disconnected from, far from and in front of block AAA there is this block. A medium blue square is inside block AAA. Block AAA covers another medium blue square. A medium black square is inside and touching and a medium yellow square is in block BBB. Block CCC contains a medium yellow square.
Does a block have medium blue square number one?