There are three blocks. We call them A, B and C. Block B is below A and block A is to the right of C. Block A has two medium black squares. Medium black square number one is below medium black square number two. Block B has two medium black squares. Below medium black square number two there is medium black square number one. And block C contains a medium black square.
Is there a medium black square number two above all black squares which are below medium square number one?