| Count | Prefix |
|---|---|
| 1 | 1 |
| 2,555 | 1- |
| 42 | 1. |
| 12,597 | 10 |
| 3,696 | 11 |
| 9,241 | 12 |
| 2,087 | 13 |
| 1,573 | 14 |
| 1,473 | 15 |
| 1,927 | 16 |
| 1,552 | 17 |
| 7,182 | 18 |
| 2,348 | 19 |
| 1,336 | 1a |
| 861 | 1b |
| 1,371 | 1c |
| 814 | 1d |
| 522 | 1e |
| 615 | 1f |
| 539 | 1g |
| 586 | 1h |
| 432 | 1i |
| 208 | 1j |
| 409 | 1k |
| 516 | 1l |
| 975 | 1m |
| 522 | 1n |
| 561 | 1o |
| 1,006 | 1p |
| 123 | 1q |
| 505 | 1r |
| 6,048 | 1s |
| 968 | 1t |
| 355 | 1u |
| 284 | 1v |
| 1,468 | 1w |
| 732 | 1x |
| 113 | 1y |
| 141 | 1z |