There exist three blocks, named AAA, BBB and CCC. Block BBB is within and block CCC is below block AAA. On the left side of block CCC there is block AAA. Block BBB has a medium yellow square. Over medium yellow square number one is another medium yellow square. Medium yellow square number two is inside block BBB. A medium black square is within block BBB. Block CCC contain a medium yellow square and two medium blue squares. The medium yellow square are above another medium blue square and medium blue square number two. Below medium blue square number two is medium blue square number three. Block CCC covers medium blue square number three. Medium blue square number three is under medium blue square number one. Medium blue square number one is under the shape which was above medium blue square number two.
Are all medium black squares under a medium yellow square?