Three blocks, called AAA, BBB and CCC exist. In block BBB there is block CCC. To the south of block AAA is block BBB. A medium black square is inside and touching block BBB. Block BBB contain a medium yellow square and a medium blue square. North of the medium black square is the medium blue square. A medium blue square is in and a medium black square is covered by block CCC. Block CCC contain a medium yellow square and another medium blue square. Medium blue square number two touches and the medium black square is south of medium blue square number one. Medium blue square number one touches the medium yellow square.
Where is medium blue square number one regarding block AAA?