Two blocks, named AAA and BBB exist in the image. Block BBB is behind and south of block AAA. Block AAA with a medium black square is disconnected from this block. A medium blue square is in block AAA. The medium black square is south of this thing. A medium black square is in and a medium blue square is covered by block BBB. The medium blue square is to the south of the medium black square.
What is the position of the medium blue square in AAA regarding the medium black square in block AAA?