There are three blocks. Lets call them A, B and C. There is a medium black square in block A. Below block A is block B which contains a medium black square. To the left of block A there is block C with three medium yellow squares in it. Below medium yellow square number three and medium yellow square number two is medium yellow square number one. Medium yellow square number two is below medium yellow square number three.
Are all medium black squares to the right of a medium shape that is above a medium square?