| Count | Prefix |
|---|---|
| 51 | fed- |
| 15 | fed. |
| 1 | fed0 |
| 4 | fed1 |
| 5 | fed2 |
| 5 | fed3 |
| 4 | fed4 |
| 1 | fed9 |
| 166 | feda |
| 75 | fedb |
| 181 | fedc |
| 105 | fedd |
| 3,808 | fede |
| 70 | fedf |
| 41 | fedg |
| 37 | fedh |
| 238 | fedi |
| 15 | fedj |
| 12 | fedk |
| 57 | fedl |
| 83 | fedm |
| 39 | fedn |
| 310 | fedo |
| 65 | fedp |
| 1 | fedq |
| 115 | fedr |
| 150 | feds |
| 80 | fedt |
| 80 | fedu |
| 18 | fedv |
| 55 | fedw |
| 19 | fedx |
| 16 | fedy |
| 5 | fedz |