| Count | Prefix |
|---|---|
| 629 | hr- |
| 23 | hr. |
| 5 | hr0 |
| 30 | hr1 |
| 37 | hr2 |
| 19 | hr3 |
| 40 | hr4 |
| 8 | hr5 |
| 4 | hr6 |
| 4 | hr7 |
| 4 | hr8 |
| 12 | hr9 |
| 885 | hra |
| 506 | hrb |
| 643 | hrc |
| 415 | hrd |
| 388 | hre |
| 191 | hrf |
| 167 | hrg |
| 226 | hrh |
| 487 | hri |
| 62 | hrj |
| 79 | hrk |
| 204 | hrl |
| 521 | hrm |
| 147 | hrn |
| 372 | hro |
| 378 | hrp |
| 20 | hrq |
| 157 | hrr |
| 598 | hrs |
| 368 | hrt |
| 143 | hru |
| 193 | hrv |
| 174 | hrw |
| 39 | hrx |
| 78 | hry |
| 40 | hrz |