We have three blocks. We call them A, B and C. A medium blue square and a medium black square are in block A. It also contains one medium yellow square. Below the medium blue square and the medium black square is the medium yellow square. The medium blue square is below the medium black square. To the right of block A is block B with a medium black square in it. Finally, we have block C. It is below block B. It contains one medium yellow square.
Is the medium yellow square that is to the left of a black square touching all medium squares which are below a medium square?