A medium black square and a medium yellow square are in a block named AAA. Block AAA covers another medium yellow square and contains a medium blue square. North of medium yellow square number two there is medium yellow square number one. The medium blue square is to the south of the medium black square. Behind and far from block AAA is another block named BBB with a medium yellow square. To the north of the medium yellow square there is a medium blue square. The medium blue square is inside block BBB. A medium black square is covered by block BBB.
Does any block have all medium black squares?