{
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  "maxTrades": 10,
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        "advancedNBTData": "{StoredEnchantments:[{id:\"minecraft:mending\",lvl:1}]}"
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      },
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      },
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        "advancedNBTData": "{StoredEnchantments:[{id:\"minecraft:looting\",lvl:1}]}"
      },
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      "UTID": "minecraft:librarian_enchanted_book_for_cog_3"
    },
    {
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      },
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        "priceModifier": 0
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      "UTID": "minecraft:librarian_enchanted_book_for_cog_3"
    },
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        "advancedNBTData": "{StoredEnchantments:[{id:\"minecraft:feather_falling\",lvl:1}]}"
      },
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      "demand": 0,
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      "UTID": "minecraft:librarian_enchanted_book_for_cog_3"
    }
  ]
}