| Count | Prefix |
|---|---|
| 693 | 2- |
| 32 | 2. |
| 4,369 | 20 |
| 4,179 | 21 |
| 1,624 | 22 |
| 1,283 | 23 |
| 7,313 | 24 |
| 1,200 | 25 |
| 708 | 26 |
| 627 | 27 |
| 771 | 28 |
| 617 | 29 |
| 718 | 2a |
| 1,606 | 2b |
| 1,461 | 2c |
| 1,061 | 2d |
| 553 | 2e |
| 694 | 2f |
| 759 | 2g |
| 587 | 2h |
| 426 | 2i |
| 206 | 2j |
| 581 | 2k |
| 535 | 2l |
| 1,092 | 2m |
| 1,425 | 2n |
| 302 | 2o |
| 902 | 2p |
| 106 | 2q |
| 565 | 2r |
| 1,138 | 2s |
| 821 | 2t |
| 277 | 2u |
| 206 | 2v |
| 619 | 2w |
| 354 | 2x |
| 160 | 2y |
| 102 | 2z |