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Sharpening a pencil in an electric pencil sharpener
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Pencil sharpener short rev 2
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Pencil sharpener long revs 3
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Pencil sharpener long revs 2
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Pencil sharpener long revs 1
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Pencil sharpener running
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Pencil sharpener short rev 1
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Pencil sharpener revs x2
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Pencil sharpener long revs 4
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Electric pencil sharpener short revs, multiple times