There are three blocks, A, B and C. There is one medium yellow square in block A. Below block A is block B. It has two medium blue squares. Medium blue square number one is below a medium yellow square. Below the medium yellow square is medium blue square number two. Below medium blue square number two , medium blue square number one and the medium yellow square there is a medium black square. Above block B there is block C which contains one medium black square.
Is there any medium squares that are above a blue square above a medium square that is above a medium square?