There are three blocks. Lets call them A, B and C. Block A is to the left of blocks C and B. Block A contains one big yellow square and one small blue triangle. One big black triangle is also in this block. The big black triangle is above and far from the small blue triangle. The small blue triangle is touching the right edge of this block. Near to and to the left of the small blue triangle there is the big yellow square. Block B has one small blue triangle and a big blue square. The small blue triangle is above and to the right of the big blue square. Near to and above the big blue square there is a small black square. And block C contains one medium black square, one big blue circle and one medium yellow circle. The medium black square is below and to the left of the medium yellow circle. The big blue circle is to the left of a big yellow triangle. It is above the medium yellow circle which is below the big yellow triangle.
What is to the left of the small black square? a small blue triangle or a big blue square?
small blue triangle  big blue square  both of them none of them