{
  "variants": {
    "east=false,north=false,south=false,west=false": { "model": "bars_nsew" },
    "east=false,north=true,south=false,west=false": { "model": "bars_n" },
    "east=true,north=false,south=false,west=false": {
      "model": "bars_n",
      "y": 90
    },
    "east=false,north=false,south=true,west=false": {
      "model": "bars_n",
      "y": 180
    },
    "east=false,north=false,south=false,west=true": {
      "model": "bars_n",
      "y": 270
    },
    "east=true,north=true,south=false,west=false": { "model": "bars_ne" },
    "east=true,north=false,south=true,west=false": {
      "model": "bars_ne",
      "y": 90
    },
    "east=false,north=false,south=true,west=true": {
      "model": "bars_ne",
      "y": 180
    },
    "east=false,north=true,south=false,west=true": {
      "model": "bars_ne",
      "y": 270
    },
    "east=false,north=true,south=true,west=false": { "model": "bars_ns" },
    "east=true,north=false,south=false,west=true": {
      "model": "bars_ns",
      "y": 90
    },
    "east=true,north=true,south=true,west=false": { "model": "bars_nse" },
    "east=true,north=false,south=true,west=true": {
      "model": "bars_nse",
      "y": 90
    },
    "east=false,north=true,south=true,west=true": {
      "model": "bars_nse",
      "y": 180
    },
    "east=true,north=true,south=false,west=true": {
      "model": "bars_nse",
      "y": 270
    },
    "east=true,north=true,south=true,west=true": { "model": "bars_nsew" }
  }
}
