| Letters | Countries | % Correct |
|---|---|---|
| A/B | Argentina Brazil | 95%
|
| G/H | Guatemala Honduras | 79%
|
| I/J | Israel Jordan | 79%
|
| B/C | Brazil Colombia | 74%
|
| F/G | France Germany | 68%
|
| T/U | Turkmenistan Uzbekistan | 68%
|
| D/E | Djibouti Ethiopia | 63%
|
| D/E | Djibouti Eritrea | 58%
|
| T/U | Tanzania Uganda | 58%
|
| B/C | Bolivia Chile | 53%
|
| M/N | Mali Niger | 53%
|
| T/U | Tajikistan Uzbekistan | 53%
|
| B/C | Bhutan China | 47%
|
| B/C | Bosnia and Herzegovina Croatia | 37%
|
| R/S | Romania Serbia | 32%
|
| G/I | Guinea Ivory Coast | 26%
|
| C/D | Central African Republic Democratic Republic of the Congo | 16%
|
| S/T | Syria Turkey | 16%
|
| B/C | Burma China | 11%
|