There exist two blocks, called AAA and BBB. Over block BBB is block AAA. Disconnected from this block is block BBB. A medium yellow square and a medium black square are in block AAA. Above and touches the medium yellow square is the medium black square. Above and touches another medium black square there is the medium yellow square. Medium black square number two is inside and touching block AAA. A medium yellow square is covered by block BBB.
Are all blocks under all things?