YOU SAID:

gnaw off your kneecaps

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あなたの膝蓋をかじる

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Gnawing your patella

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膝蓋骨をかじる

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Gnawing the patella

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脱臼膝蓋骨

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Disloc patello-femorl jt

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脱臼膝蓋骨

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Disloc patello-femorl jt