We have two blocks. Lets call them A and B. There are a small blue square and a big blue triangle in block A. Below and to the left of the big blue triangle there is the small blue square. Block B is below block A. It has one small black square, a small yellow square and a small black circle. Below the small yellow square and the small black circle is the small black square. To the right of the small black circle there is the small yellow square.
What is below the small blue square? a small black circle or a big blue triangle?
small black circle  big blue triangle  both of them none of them