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