| Count | Prefix |
|---|---|
| 460 | fc- |
| 21 | fc. |
| 8 | fc0 |
| 28 | fc1 |
| 47 | fc2 |
| 11 | fc3 |
| 14 | fc4 |
| 6 | fc5 |
| 5 | fc6 |
| 5 | fc7 |
| 17 | fc8 |
| 4 | fc9 |
| 607 | fca |
| 500 | fcb |
| 875 | fcc |
| 213 | fcd |
| 221 | fce |
| 193 | fcf |
| 237 | fcg |
| 258 | fch |
| 357 | fci |
| 63 | fcj |
| 161 | fck |
| 259 | fcl |
| 361 | fcm |
| 184 | fcn |
| 313 | fco |
| 380 | fcp |
| 20 | fcq |
| 239 | fcr |
| 705 | fcs |
| 254 | fct |
| 119 | fcu |
| 127 | fcv |
| 118 | fcw |
| 31 | fcx |
| 47 | fcy |
| 44 | fcz |