| Letter | Rank | Country | % Correct |
|---|---|---|---|
| O | 70 | Oman | 96%
|
| Q | 159 | Qatar | 96%
|
| Y | 49 | Yemen | 96%
|
| Z | 60 | Zimbabwe | 92%
|
| H | 101 | Honduras | 80%
|
| U | 89 | Uruguay | 80%
|
| V | 65 | Vietnam | 80%
|
| J | 110 | Jordan | 76%
|
| E | 99 | Eritrea | 72%
|
| K | 85 | Kyrgyzstan | 72%
|
| P | 109 | Portugal | 72%
|
| I | 106 | Iceland | 68%
|
| T | 94 | Tajikistan | 68%
|
| A | 112 | Azerbaijan | 64%
|
| F | 64 | Finland | 64%
|
| L | 102 | Liberia | 64%
|
| S | 90 / 107 | Suriname / South Korea | 64%
|
| R | 81 | Romania | 60%
|
| D | 128 | Dominican Republic | 56%
|
| G | 95 | Greece | 56%
|
| N | 97 | North Korea | 56%
|
| B | 100 | Benin | 48%
|
| C | 104 | Cuba | 44%
|
| M | 98 | Malawi | 44%
|