Alien device, start, work, stop:
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Jetpack, shutdown, approach
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Space, swoosh, fast moving
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Blasters, Space wars, lasers
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Lands, Spacecraft flies up
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Shot, Charging a laser weapon
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Spaceship takes off, gaining power, hyper
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Shot, Charging a laser gun
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Stop, Spaceship, engine start
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Doorbell, spacecraft signal
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Spacecraft landing
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Cosmic sounds
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Rocket flight
★★★★★