We have a block named AAA. In front of another block called BBB is block AAA. Block BBB contains a small black triangle. To the south of the small black triangle there is a small black square. The small black square is inside block BBB. Another block called CCC with a small blue square is in this block. A big yellow circle is in this block. This thing is south of and a big blue circle is in front of the small blue square. Block CCC covers the big blue circle.
Is block BBB behind all blocks?