{
  "type": "minecraft:crafting_shaped",
  "key": {
    "R": {
      "item": "minecraft:piston"
    },
    "P": {
      "tag": "forge:concrete"
    },
    "T": {
      "tag": "minecraft:planks"
    },
    "X": {
      "tag": "forge:slimeballs"
    }
  },
  "pattern": [
    "TTT",
    "PXP",
    "PRP"
  ],
  "result": {
    "item": "minecraft:sticky_piston",
    "count": 1
  }
}