A medium blue square is within a block called AAA. This thing is over a medium black square. Below and touches another medium black square there is this shape. Block AAA contains medium black square number one. This block has medium black square number two. This block covers a medium yellow square which is below medium black square number two. Over and disconnected from block AAA there is another block called BBB. This block covers a medium blue square.
Are all medium black squares under block BBB?