| Letter | Length | Country | % Correct |
|---|---|---|---|
| O | 4 | Oman | 93%
|
| Y | 5 | Yemen | 93%
|
| Q | 5 | Qatar | 92%
|
| Z | 6 | Zambia | 90%
|
| C | 4 | Chad/Cuba | 88%
|
| N | 5 | Nauru/Nepal/Niger | 88%
|
| R | 6 | Russia/Rwanda | 86%
|
| F | 4 | Fiji | 84%
|
| L | 4 | Laos | 84%
|
| V | 7 | Vanuatu/Vietnam | 84%
|
| M | 4 | Mali | 83%
|
| S | 5 | Samoa/Spain/Sudan/Syria | 83%
|
| D | 7 | Denmark | 82%
|
| P | 4 | Peru | 82%
|
| G | 5 | Ghana/Gabon | 81%
|
| H | 5 | Haiti | 80%
|
| I | 4 | Iran/Iraq | 78%
|
| J | 5 | Japan | 78%
|
| T | 4 | Togo | 78%
|
| U | 6 | Uganda | 76%
|
| B | 5 | Benin | 66%
|
| K | 5 | Kenya | 61%
|
| A | 6 | Angola | 58%
|
| E | 5 | Egypt | 57%
|