| Count | Prefix |
|---|---|
| 175 | 1a- |
| 14 | 1a. |
| 3 | 1a0 |
| 20 | 1a1 |
| 11 | 1a2 |
| 6 | 1a3 |
| 4 | 1a4 |
| 2 | 1a5 |
| 3 | 1a6 |
| 2 | 1a7 |
| 2 | 1a8 |
| 2 | 1a9 |
| 31 | 1aa |
| 60 | 1ab |
| 95 | 1ac |
| 83 | 1ad |
| 16 | 1ae |
| 33 | 1af |
| 38 | 1ag |
| 15 | 1ah |
| 38 | 1ai |
| 11 | 1aj |
| 16 | 1ak |
| 72 | 1al |
| 83 | 1am |
| 131 | 1an |
| 8 | 1ao |
| 71 | 1ap |
| 3 | 1aq |
| 79 | 1ar |
| 76 | 1as |
| 59 | 1at |
| 69 | 1au |
| 23 | 1av |
| 31 | 1aw |
| 5 | 1ax |
| 2 | 1ay |
| 8 | 1az |