There exist three blocks, named AAA, BBB and CCC. A medium blue square is within block AAA. Over and behind block AAA is block BBB with a medium yellow square. A medium black square is inside and another medium black square is covered by this block. Medium black square number two is below the medium yellow square. Under and touches the medium yellow square is medium black square number one. Block CCC has block AAA.
Where is AAA regarding the medium blue square?