anchor.diff:  EAST AFRICA REGIONAL,?EA,?EA
   East Asia Regional,*ES,*ES
   EAST TIMOR (TIMOR-LESTE),TLS,TLS
  +East Timor,TLS,TLS
   Eastern European Regional,*EE,*EE
   ECU,ECU,ECU
   ECU: ECUADOR,ECU,ECU
  
positive.code: "Congo, Republic of the",COG,COG
  Republic of the Congo,COG,COG
  "Congo, the Democratic Republic of the",COD,COD
  Cook Islands,COK,COK
  Côte d'Ivoire,CIV,CIV
  Curaçao,CUW,CUW
  
negative.code: US,US,USA
  USA,USA,USA
  USA: UNITED STATES OF AMERICA,USA,USA
  United States of America,USA,USA
  UZB,UZB,UZB
  UZBEKISTAN,UZB,UZB
  VANUATU,VUT,VUT
  