anchor.diff:  PAN: PANAMA,PAN,PAN
   PANAMA,PAN,PAN
   Papua New Guin,PNG,PNG
  +Papua-New Guinea,PNG,PNG
   PAPUA NEW GUINEA,PNG,PNG
   PARAGUAY,PRY,PRY
   PER,PER,PER
  
positive.code: TONGA,TON,TON
  Trin & Tobago,TTO,TTO
  Trinidad + Tobago,TTO,TTO
  TRINIDAD AND TOBAGO,TTO,TTO
  TTO,TTO,TTO
  TTO: TRINIDAD AND TOBAGO,TTO,TTO
  
negative.code: CAN: CANADA,CAN,CAN
  CANADA,CAN,CAN
  CAPE VERDE,CPV,CPV
  "Cape Verde, Republic of",CPV,CPV
  Caribbean Regional,*CB,*CB
  Caucasus Regional,*CC,*CC
  Cayman Is,CYM,CYM
  