We have two blocks, A and B. Two medium blue squares are in block A. Medium blue square number one is below medium blue square number two and a medium black square. A medium yellow square is touching the bottom edge of this block. It is below the medium black square , medium blue square number one and medium blue square number two. To the left of block A we have block B. It contains two medium blue squares. Below medium blue square number two there is medium blue square number one.
What is to the left of the yellow shape? a black thing or a medium blue square?
black thing medium blue square  both of them none of them