We have two blocks, A and B. Block A contains one medium blue square. Block B is above block A. It has two medium yellow squares and two other medium black squares. Medium yellow square number one is touching the bottom edge of this block. Below medium black square number two there is medium yellow square number two. Medium black square number one is below medium black square number two. Below medium black square number one , medium yellow square number two and medium black square number two there is medium yellow square number one.
Which object is above a medium square? medium black square number one or medium black square number two?
medium black square  number one medium black square  number two both of them none of them