There are two blocks, called AAA and BBB. South of and disconnected from block AAA there is block BBB. Behind this block is block AAA. A yellow square is inside and touching block AAA. A medium black square is covered by and another medium black square is inside block BBB. Block BBB contains another medium black square. Medium black square number three touches medium black square number one and is to the south of medium black square number two. South of this object is medium black square number one.
Where is the yellow object regarding medium black square number two?