{
  "feature": "terralith:jungle/mountains/slab_stone",
  "placement": [
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      "type": "minecraft:count",
      "count": 20
    },
    {
      "type": "minecraft:count",
      "count": 30
    },
    {
      "type": "minecraft:in_square"
    },
    {
      "type": "minecraft:heightmap",
      "heightmap": "WORLD_SURFACE"
    },
    {
      "type": "minecraft:block_predicate_filter",
      "predicate": {
        "type": "minecraft:all_of",
        "predicates": [
          {
            "type": "minecraft:matching_blocks",
            "blocks": [
              "minecraft:air"
            ]
          },
          {
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            "blocks": [
              "minecraft:stone"
            ],
            "offset": [
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              0
            ]
          },
          {
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                    "blocks": [
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              {
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                  },
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              },
              {
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                    ]
                  }
                ]
              }
            ]
          }
        ]
      }
    },
    {
      "type": "minecraft:biome"
    }
  ]
}