There are three blocks. We call them A, B and C. Block B is to the left of C and block C is to the right of A. Block A contains two medium blue squares. Below a medium black square which is below medium blue square number two is medium blue square number one. It is below medium blue square number two. Block B has one medium black square. And block C has one medium yellow square.
Which object is to the left of a yellow shape? medium blue square number one or medium blue square number two?
medium blue square  number one medium blue square  number two both of them none of them