A block called AAA have a medium yellow square and a medium black square. The medium yellow square touch another medium black square and the medium black square. Block AAA covers medium black square number two. To the south of and disconnected from this block there is another block named BBB. Block AAA is behind this block. Block BBB covers a medium blue square which is to the south of another medium blue square. Medium blue square number two is within block BBB. North of the thing which was to the south of medium blue square number two is a medium yellow square. The medium yellow square is within block BBB.
Where is medium black square number two relative to the medium yellow square in block AAA?