{
    "variants": {
        "": [ { "model": "block/birch_planks", "weight":5 }
,{ "model": "block/birch_planks1", "weight":18 }
,{ "model": "block/birch_planks2", "weight":10 }
,{ "model": "block/birch_planks3", "weight":10 }
,{ "model": "block/birch_planks4", "weight":18 }
,{ "model": "block/birch_planks5", "weight":10 }
,{ "model": "block/birch_planks6", "weight":10 }
,{ "model": "block/birch_planks7", "weight":18 }
,{ "model": "block/birch_planks8", "weight":10 }
,{ "model": "block/birch_planks9", "weight":10 }
,{ "model": "block/birch_planks10", "weight":18 }
,{ "model": "block/birch_planks11", "weight":10 }
,{ "model": "block/birch_planks12", "weight":10 }

 ]   }
}