{
  "format_version": "1.12",
  "minecraft:recipe_shaped": {
    "description": {
      "identifier": "minecraft:lectern"
    },  
    "tags": [ "crafting_table" ],
    "pattern": [
      "###",
      " B ",
      " # "
    ],
    "key": {
      "#": {
        "tag": "minecraft:wooden_slabs"
      },
      "B": {
        "item": "minecraft:bookshelf"
      }
    },
    "result": {
      "item": "minecraft:lectern"
    },
    "priority": -1
  }
}