| Count | Prefix |
|---|---|
| 28 | zr- |
| 10 | zr. |
| 2 | zr0 |
| 14 | zr1 |
| 4 | zr2 |
| 5 | zr3 |
| 4 | zr4 |
| 2 | zr5 |
| 3 | zr6 |
| 3 | zr7 |
| 1 | zr8 |
| 3 | zr9 |
| 107 | zra |
| 20 | zrb |
| 40 | zrc |
| 18 | zrd |
| 155 | zre |
| 24 | zrf |
| 28 | zrg |
| 20 | zrh |
| 69 | zri |
| 12 | zrj |
| 24 | zrk |
| 26 | zrl |
| 26 | zrm |
| 23 | zrn |
| 123 | zro |
| 22 | zrp |
| 5 | zrq |
| 18 | zrr |
| 41 | zrs |
| 39 | zrt |
| 45 | zru |
| 7 | zrv |
| 10 | zrw |
| 11 | zrx |
| 22 | zry |
| 24 | zrz |