We have two blocks. We call them A and B. One medium blue square is in block A. To the left of block A we have block B which contains three medium yellow squares. Medium yellow square number one is below medium yellow square number three. A medium black square is below medium yellow square number two and medium yellow square number three. Medium yellow square number one is below medium yellow square number two. Below medium yellow square number three there is medium yellow square number two.
What is to the left of the blue thing? a black thing or a medium yellow square?
black thing medium yellow square  both of them none of them