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  "abstract": "In a collaborative robot, a shoulder includes a plurality of attachment holes for attaching an auxiliary device at two different positions. The plurality of attachment holes includes a plurality of first attachment holes on one side of the shoulder and a plurality of second attachment holes on another side of the shoulder with a first virtual plane extending therebetween. The plurality of attachment holes is holes selected from either the plurality of first attachment holes or the plurality of second attachment holes and to which the auxiliary device is attached.",
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  "title": "Collaborative robot",
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