{
  "ring_codes": {
    "new": "NGCD-061 MT\tB01 N, O, U\nNGCD-061 MT\tB04 IFPI L262",
    "old": "NGCD-061 MT\tB01 N, ◯, U\nNGCD-061 MT\tB04 IFPI L262"
  }
}