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Morse code: number seven
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Morse code: letter u
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Ship, morse code spotlight, exterior, open and close gates, WWII merchant marine
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Radio with a weak signal, morse code letter "y", military
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Morse code: number five
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Morse code: number nine
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Morse code: number eight
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Morse code: number three
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Radio with a weak signal, morse code letter "o", military
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Morse code: number six
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