| Count | Prefix |
|---|---|
| 119 | fe- |
| 13 | fe. |
| 1 | fe0 |
| 6 | fe1 |
| 18 | fe2 |
| 7 | fe3 |
| 5 | fe4 |
| 3 | fe5 |
| 1 | fe6 |
| 4 | fe7 |
| 9 | fe8 |
| 3 | fe9 |
| 3,223 | fea |
| 683 | feb |
| 719 | fec |
| 5,927 | fed |
| 5,955 | fee |
| 183 | fef |
| 273 | feg |
| 413 | feh |
| 2,103 | fei |
| 114 | fej |
| 164 | fek |
| 5,994 | fel |
| 4,223 | fem |
| 5,592 | fen |
| 166 | feo |
| 272 | fep |
| 20 | feq |
| 12,891 | fer |
| 4,755 | fes |
| 2,989 | fet |
| 1,508 | feu |
| 432 | fev |
| 420 | few |
| 146 | fex |
| 274 | fey |
| 178 | fez |