The boat swims past:
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Pump for pumping water out of a boat
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Moves, jammed, The motor boat starts
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The boat starts, expects to jam
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Ferry moving
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Jammed, The boat moves slowly
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The motor boat starts, moves
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Boat is moving slowly
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Motorboat Competitions
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Motor boat will not start
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Jamming, The motor boat starts, reverse
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Opening, Shutting down a spacecraft engine
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Sail waving in the wind
★★★★★