| Count | Prefix |
|---|---|
| 7,121 | a- |
| 41 | a. |
| 130 | a0 |
| 3,663 | a1 |
| 2,345 | a2 |
| 631 | a3 |
| 556 | a4 |
| 206 | a5 |
| 154 | a6 |
| 225 | a7 |
| 161 | a8 |
| 153 | a9 |
| 21,857 | aa |
| 57,890 | ab |
| 90,070 | ac |
| 89,653 | ad |
| 20,208 | ae |
| 31,448 | af |
| 41,470 | ag |
| 10,754 | ah |
| 49,015 | ai |
| 7,268 | aj |
| 19,327 | ak |
| 206,065 | al |
| 97,752 | am |
| 140,212 | an |
| 7,812 | ao |
| 59,342 | ap |
| 12,409 | aq |
| 152,424 | ar |
| 94,298 | as |
| 59,056 | at |
| 86,160 | au |
| 33,501 | av |
| 12,937 | aw |
| 9,134 | ax |
| 8,767 | ay |
| 15,677 | az |