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