How would you draw $(A\setminus B)\times (A\setminus B) = (A\times A)\setminus (B\times B)$?

Question

I know it's useful to prove set equalities to make a quick sketch of the sets described. How can I draw this one?

$$(A\setminus B)\times (A\setminus B) = (A\times A)\setminus (B\times B)$$

Answer 1

Usually $\blacksquare_1 \neq \blacksquare_2 \setminus \blacksquare_3$.