Intertwined kitchen utensils.

Intertwined tools.

Inverted faces.

Inverted faces.

Is it a cat, or are there two people sitting at the table?

Is it a cube inside another one? Or is it a cube with a missing part?

Is it a donkey you see, or a seal?

Is it a duck or rabbit?

Is it a face, or some women?

Is it a hand or an elephant?

Is it a saxophone player, or a human face?

Is it a skeleton head or a witch?

Is it a vase, or two faces?

Is it a woman hand holding the mouse?

Is it going to rotate?

Is the circle inside moving?

Is the square skewed? (The image is Copyright A. Kitaoka)

Is the water flowing upwards?

Is there a movement in the streams?

Is there a tomatoe in the middle? (The image is Copyright A. Kitaoka)