{
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      2,
      3,
      4
    ],
    [
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      4,
      6,
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    ]
  ],
  "x1": [
    [
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      3,
      4,
      5
    ],
    [
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      6,
      8,
      10
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  ],
  "y": [
    [
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    ],
    [
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  ]
}