| Two Letter Sequence | Country | % Correct |
|---|---|---|
| an | Afghanistan | Albania | Andorra | +54 | 98%
|
| al | Albania | Algeria | Australia | +18 | 95%
|
| ar | Antigua and Barbuda | Argentina | Armenia | +14 | 95%
|
| af | Afghanistan | Burkina Faso | Central African Republic | +1 | 93%
|
| au | Australia | Austria | Guinea-Bissau | +5 | 92%
|
| az | Azerbaijan | Brazil | Kazakhstan | 91%
|
| ad | Bangladesh | Barbados | Canada | +7 | 84%
|
| am | Bahamas | Cambodia | Cameroon | +9 | 83%
|
| ai | Azerbaijan | Bahrain | Haiti | +9 | 82%
|
| aq | Iraq | 81%
|
| ay | Malaysia | Norway | Paraguay | +1 | 78%
|
| ao | São Tomé and Príncipe | Laos | 71%
|
| at | Croatia | D. R. Congo | Equatorial Guinea | +10 | 67%
|
| ak | Kazakhstan | Pakistan | Slovakia | 63%
|
| ap | Cape Verde | Japan | Papua New Guinea | +1 | 59%
|
| ah | Bahamas | Bahrain | 53%
|
| ab | Gabon | Guinea-Bissau | Saudi Arabia | +2 | 53%
|
| as | Bahamas | Burkina Faso | East Timor | +3 | 49%
|
| aa | Antigua and Barbuda | Bosnia and Herzegovina | 48%
|
| aw | Malawi | 45%
|
| aj | Tajikistan | 40%
|
| ag | Madagascar | Nicaragua | Paraguay | +1 | 38%
|
| ac | Monaco | North Macedonia | 34%
|
| ae | Israel | 31%
|