static SS countryCodeToCommonName_map;

static S countryCodeToCommonName(S code) {
  if (countryCodeToCommonName_map == null) synchronized(main.class) {
    countryCodeToCommonName_map = new HashMap;
    for (SS map : isoCountryData())
      countryCodeToCommonName_map.put(map.get("ISO 3166-1 2 Letter Code"), map.get("Common Name"));
  }
  code = toUpper(dropPrefix(".", code));
  ret countryCodeToCommonName_map.get(code);
}