3 shapes. A bird flying. Excellent. Now pick the 2 blocky shapes. Those are both wrong. Deselect them. These ones don't really resemble anything. They have flat bottoms. They are not symmetrical.
page7-106.png page7-4.png page7-209.png
page7-209.png page8-222.png page9-34.png page4-150.png page1-51.png page5-132.png page7-4.png page7-106.png page1-38.png page5-49.png
page1-38.png page5-132.png page7-4.png
Great!! Keep both of those. Now pick the other blocky shape. This one is taller than the one you just picked.