Print all the country code in LCS
Examples
get_countries_lcs()
#> Belgium Finland France Israel Italy
#> "be" "fi" "fr" "il" "it"
#> Laos Luxembourg Mali Mexico Palestine
#> "la" "lu" "ml" "mx" "ps"
#> Philippines Poland South Africa Spain Switzerland
#> "ph" "pl" "za" "es" "ch"
#> United Kingdom
#> "uk"
