| Country | Prefix/Suffix | % Correct |
|---|---|---|
| | Mexico | United States | 88%
|
| {United States} of America | 88%
| |
| Central African {Republic} | 71%
| |
| Czech {Republic} | 71%
| |
| Dominican {Republic} | 71%
| |
| | Albania | Angola | +99 others | Republic | 71%
|
| {Republic} of China (Taiwan) | 71%
| |
| {Republic} of the Congo | 71%
| |
| Bahrain | Belgium | Bhutan | +10 others | Kingdom | 54%
|
| Bangladesh | China | People's Republic | 50%
|
| United Kingdom | 50%
| |
| {United Kingdom} of Great Britain and Northern Ireland | 50%
| |
| | East Timor | São Tomé and Príncipe | Democratic Republic | 42%
|
| {Democratic Republic} of the Congo | 42%
| |
| Russia | Saint Kitts and Nevis | Federation | 42%
|
| Brazil | Germany | Nigeria | Somalia | Federal Republic | 38%
|
| Iran | Mauritania | Pakistan | Islamic Republic | 38%
|
| Eritrea | Israel | Kuwait | +3 others | State | 33%
|
| Australia | Bahamas | Dominica | Commonwealth | 29%
|
| North Korea | Democratic People's Republic | 25%
|
| Egypt | Syria | Arab Republic | 21%
|
| Jordan | Hashemite Kingdom | 21%
|
| Andorra | Liechtenstein | Monaco | Principality | 21%
|
| Vietnam | Socialist Republic | 21%
|
| Oman | Sultanate | 21%
|
| {United} Arab {Emirates} | 21%
| |
| United Emirates | 21%
| |
| Federated States | 17%
| |
| {Federated States} of Micronesia | 17%
| |
| Algeria | Laos | People's Democratic Republic | 17%
|
| Switzerland | Confederation | 13%
|
| Ethiopia | Nepal | Federal Democratic Republic | 13%
|
| Afghanistan | Islamic Emirate | 13%
|
| Comoros | Union | 13%
|
| Venezuela | Bolivarian Republic | 8%
|
| Luxembourg | Grand Duchy | 8%
|
| Papua New Guinea | Samoa | Independent State | 8%
|
| Uruguay | Oriental Republic | 8%
|
| Myanmar | Republic of the Union | 8%
|
| Guyana | Co-operative Republic | 4%
|
| Brunei | Darussalam | 4%
|
| Sri Lanka | Democratic Socialist Republic | 4%
|
| Bolivia | Plurinational State | 4%
|
| Tanzania | United Republic | 4%
|