| Letter | Language | % Correct |
|---|---|---|
| a | Czech/Danish/English/French/Hungarian/Italian/Polish/Portuguese/Romanian/Serbo-Croatian/Slovak/Slovene/Spanish | 100%
|
| i | Czech/Danish/English/Italian/Norwegian/Polish/Serbo-Croatian/Slovak/Swedish | 86%
|
| e | Hungarian/Italian/Portuguese/Spanish | 79%
|
| o | Czech/Italian/Lithuanian/Polish/Portuguese/Romanian/Serbo-Croatian/Slovene/Spanish | 69%
|
| y | French/Spanish | 67%
|
| u | Afrikaans/Czech/Dutch/Polish/Serbo-Croatian/Spanish | 56%
|
| z | Czech/Polish/Slovak/Slovene | 51%
|
| w | Polish | 49%
|
| k | Czech/Serbo-Croatian | 42%
|
| s | Czech | 39%
|
| v | Czech/Slovene | 37%
|