{
  "id": "aeronautics:envelope",
  "contents": [
    "item:aeronautics:white_envelope",
    "item:aeronautics:orange_envelope",
    "item:aeronautics:magenta_envelope",
    "item:aeronautics:light_blue_envelope",
    "item:aeronautics:yellow_envelope",
    "item:aeronautics:lime_envelope",
    "item:aeronautics:pink_envelope",
    "item:aeronautics:gray_envelope",
    "item:aeronautics:light_gray_envelope",
    "item:aeronautics:cyan_envelope",
    "item:aeronautics:purple_envelope",
    "item:aeronautics:blue_envelope",
    "item:aeronautics:brown_envelope",
    "item:aeronautics:green_envelope",
    "item:aeronautics:red_envelope",
    "item:aeronautics:black_envelope"
  ]
}