{
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      "minecraft:biome_filter": [
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          "operator": "==",
          "value": "deep_dark"
        }
      ]
    },
    "distribution": {
      "iterations": 256,
      "x": {
        "distribution": "uniform",
        "extent": [ 0, 16 ]
      },
      "y": {
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          -63, 20
        ]
      },
      "z": {
        "distribution": "uniform",
        "extent": [ 0, 16 ]
      }
    }
  }
}
