We have three blocks. Lets call them A, B and C. Block B is to the left of A and block C is to the left of B. Block A contains one medium black square and a medium blue square. The medium black square is below the medium blue square. Block B has two medium blue squares. Medium blue square number one is below medium blue square number two and a medium yellow square. Below medium blue square number two is the medium yellow square. And block C has one medium blue square.
What is to the left of the black object? a medium yellow square or a medium blue square?
medium yellow square  medium blue square  both of them none of them