{
  "type": "block_column",
  "config": {
    "allowed_placement": {
      "type": "matching_blocks",
      "blocks": [
        "spruce_log",
        "chiseled_stone_bricks",
        "cave_air",
        "air"
      ],
      "offset": [
        0,
        1,
        0
      ]
    },
    "direction": "down",
    "layers": [
      {
        "height": 1,
        "provider": {
          "type": "simple_state_provider",
          "state": {
            "Name": "air",
            "Properties": {}
          }
        }
      },
      {
        "height": 2,
        "provider": {
          "type": "simple_state_provider",
          "state": {
            "Name": "spruce_log",
            "Properties": {
              "axis": "y"
            }
          }
        }
      },
      {
        "height": 1,
        "provider": {
          "type": "simple_state_provider",
          "state": {
            "Name": "chiseled_stone_bricks",
            "Properties": {}
          }
        }
      },
      {
        "height": 32,
        "provider": {
          "type": "simple_state_provider",
          "state": {
            "Name": "spruce_log",
            "Properties": {
              "axis": "y"
            }
          }
        }
      }
    ],
    "prioritize_tip": false
  }
}