Robot heartbeat:
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Bullet hit in metal
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Small crank rotation
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Bleeding a bike wheel
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Rustling leaves, Fussing in the thicket
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Squatting the Mat (1.5 seconds)
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Twist the cap of the bicycle camera, Unscrew
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Popping bubbles, Air bubble film
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Kick the bike pedals
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Ax hit the trash
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Cut the air with a whip
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Ice crack
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US police car siren sounds
★★★★★