| Count | Prefix |
|---|---|
| 1,311 | z- |
| 23 | z. |
| 130 | z0 |
| 211 | z1 |
| 151 | z2 |
| 191 | z3 |
| 114 | z4 |
| 59 | z5 |
| 57 | z6 |
| 71 | z7 |
| 96 | z8 |
| 98 | z9 |
| 23,339 | za |
| 1,650 | zb |
| 1,255 | zc |
| 1,831 | zd |
| 29,612 | ze |
| 849 | zf |
| 1,499 | zg |
| 6,892 | zh |
| 17,365 | zi |
| 2,530 | zj |
| 787 | zk |
| 1,431 | zl |
| 1,462 | zm |
| 1,187 | zn |
| 18,168 | zo |
| 1,159 | zp |
| 441 | zq |
| 949 | zr |
| 2,341 | zs |
| 1,341 | zt |
| 8,164 | zu |
| 895 | zv |
| 2,496 | zw |
| 915 | zx |
| 3,008 | zy |
| 2,268 | zz |