{
  "type": "minecraft:block_column",
  "config": {
    "allowed_placement": {
      "type": "minecraft:matching_blocks",
      "offset":[
          0,
          1,
          0
      ],
      "blocks": [
          "minecraft:air",
          "minecraft:water",
          "minecraft:lava",
          "minecraft:dandelion",
          "minecraft:poppy",
          "minecraft:brown_mushroom",
          "minecraft:red_mushroom",
          "minecraft:short_grass",
          "minecraft:fern",
          "minecraft:tall_grass",
          "minecraft:large_fern",
          "minecraft:dead_bush",
          "minecraft:blue_orchid",
          "minecraft:allium",
          "minecraft:azure_bluet",
          "minecraft:red_tulip",
          "minecraft:orange_tulip",
          "minecraft:pink_tulip",
          "minecraft:white_tulip",
          "minecraft:oxeye_daisy",
          "minecraft:lily_of_the_valley",
          "minecraft:sugar_cane",
          "minecraft:lilac",
          "minecraft:rose_bush",
          "minecraft:peony",
          "minecraft:oak_leaves",
          "minecraft:birch_leaves",
          "minecraft:dark_oak_leaves",
          "minecraft:azalea_leaves",
          "minecraft:flowering_azalea_leaves",
		  "minecraft:grass_block",
		  "minecraft:dirt",
		  "minecraft:sand",
		  "minecraft:stone_bricks"
      ]
    },
    "prioritize_tip": true,
    "direction": "down",
    "layers": [
      {
        "height": 100,
        "provider": {
          "type": "minecraft:simple_state_provider",
          "state": {
            "Name": "minecraft:dark_oak_log"
          }
        }
      }
    ]
  }
}