| Count | Prefix |
|---|---|
| 7,643 | a- |
| 46 | a. |
| 137 | a0 |
| 3,865 | a1 |
| 2,480 | a2 |
| 677 | a3 |
| 599 | a4 |
| 234 | a5 |
| 170 | a6 |
| 243 | a7 |
| 173 | a8 |
| 161 | a9 |
| 22,886 | aa |
| 61,081 | ab |
| 95,496 | ac |
| 94,742 | ad |
| 21,583 | ae |
| 32,747 | af |
| 44,743 | ag |
| 11,410 | ah |
| 51,663 | ai |
| 7,678 | aj |
| 20,907 | ak |
| 216,677 | al |
| 102,236 | am |
| 145,301 | an |
| 8,293 | ao |
| 62,985 | ap |
| 13,145 | aq |
| 160,196 | ar |
| 100,495 | as |
| 62,765 | at |
| 91,051 | au |
| 36,281 | av |
| 13,658 | aw |
| 10,016 | ax |
| 9,138 | ay |
| 16,650 | az |