A red rectangle fills the screen, then shrinks and moves to the center as a blue rectangle appears below it. The blue rectangle expands to fill the screen, then shrinks and moves to the top as the red rectangle moves to the bottom. The blue rectangle expands again to fill the screen, then shrinks and moves to the right as the red rectangle moves to the left. The blue rectangle expands to fill the screen, then shrinks and moves to the top as the red rectangle moves to the bottom. The blue rectangle expands to fill the screen, then shrinks and moves to the right as the red rectangle moves to the
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