There are two blocks. We call them A and B. Block A contains two medium black squares. Medium black square number one is below medium black square number two and a medium blue square. Below a medium yellow square and the medium blue square there is medium black square number two. The medium yellow square is below the medium blue square. To the left of block A we have block B. It contains one medium blue square.
Is there a medium blue square to the left of all squares which are below a medium square?