We have two blocks. Lets call them A and B. Block A is to the left of B. Block A has a medium black square and one medium blue square. The medium black square is touching the bottom edge of this block. Below a medium yellow square is the medium blue square. Below the medium blue square and the medium yellow square is the medium black square. Block B contains three medium blue squares. Medium blue square number one is below medium blue square number three and medium blue square number two. Medium blue square number two is below medium blue square number three.
What is below the yellow object? a medium blue square which is in block A or a medium blue square number one?
medium blue square  which is in block A medium blue square  number one both of them none of them