A block named AAA has a medium blue square. A medium yellow square is in this block. To the south of another block called BBB is block AAA. In front of this block there is block BBB. A medium black square is inside this block. Block BBB is south of, disconnected from and far from another block named CCC. In front of this block is block CCC with a medium black square. A medium yellow square is inside and touching this block.
Are all medium blue squares inside any block?