Embark on a virtual zoo, where you will have to wait for an addictive puzzle game. Namely, he found himself on the playing field, in front of you is a lot of green squares. Click on them, they will turn to the back side, and each of them will be drawn a certain inhabitant of the zoo. Your task is to memorize them, and try to find for each pair, with the least short period of time. It is always possible to take advantage of the pause.