A block called AAA has a yellow square. A medium black square and a medium blue square are within this block. The medium black square touch the yellow thing and the medium blue square. Another block called BBB has block AAA. A medium black square is inside and touching and a medium blue square is inside this block. To the north of the medium black square there is the medium blue square. A block called CCC exists in the image.
Where is the yellow thing regarding the medium black square in AAA?