We have three blocks. We call them A, B and C. One medium yellow square is in block A. Then, we have block B. It has two medium yellow squares. Medium yellow square number one is below medium yellow square number two. Finally, above block B we have block C. It is below block A. It has two medium black squares. Medium black square number one is touching the bottom edge of this block. It is below medium black square number two.
What is below the thing that is touching the bottom edge of a block? a medium yellow square number two or a medium yellow square number one?
medium yellow square  number two medium yellow square  number one both of them none of them