| Letter | Naam | % Correct |
|---|---|---|
| A | Anton/Anna | 81%
|
| D | Dirk | 76%
|
| B | Bernard | 70%
|
| J | Jan/Johannes | 65%
|
| N | Nico | 64%
|
| K | Karel | 61%
|
| C | Cornelis | 59%
|
| E | Eduard | 59%
|
| G | Gerard | 59%
|
| F | Ferdinand | 56%
|
| H | Hendrik | 56%
|
| O | Otto | 56%
|
| I | Izaak | 54%
|
| M | Marie/Maria | 52%
|
| P | Pieter | 52%
|
| W | Willem | 52%
|
| V | Victor | 48%
|
| S | Simon | 47%
|
| Z | Zaandam/Zacharias | 47%
|
| U | Utrecht | 46%
|
| X | Xantippe | 43%
|
| T | Tinus/Teunis/Theodoor | 41%
|
| Y/IJ | IJsbrand | 31%
|
| R | Rudolf | 31%
|
| L | Lodewijk | 29%
|
| Q | Quotiënt/Quirinus | 28%
|