Items

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  CV - Very Common (TRS 9)

  More than 15000 known survivors
• 

  CO - Common (TRS 8)

  5001 to 15000 known survivors
• 

  SC - Scarce (TRS 7)

  2501 to 5000 known survivors
• 

  SV - Very Scarce (TRS 6)

  1001 to 2500 known survivors
• 

  RA - Rare (TRS 5)

  501 to 1000 known survivors
• 

  RV - Very Rare (TRS 4)

  251 to 500 known survivors
• 

  RX - Extremely Rare (TRS 3)

  51 to 250 known survivors
• 

  UN - Nearly Unique (TRS 2)

  2 to 50 known survivors
• 

  UQ - Unique (TRS 1)

  One known survivor
• 

  KZ - Zero Known Examples (TRS 0)

  Zero known survivors
• 

  KU - Unknown number of survivors (TRS 10)

  Unknown number of survivors