| Count | Prefix |
|---|---|
| 54 | fn- |
| 23 | fn. |
| 1 | fn0 |
| 11 | fn1 |
| 13 | fn2 |
| 3 | fn3 |
| 6 | fn4 |
| 3 | fn5 |
| 3 | fn6 |
| 4 | fn7 |
| 5 | fn8 |
| 3 | fn9 |
| 374 | fna |
| 665 | fnb |
| 217 | fnc |
| 112 | fnd |
| 198 | fne |
| 149 | fnf |
| 99 | fng |
| 80 | fnh |
| 133 | fni |
| 21 | fnj |
| 35 | fnk |
| 79 | fnl |
| 127 | fnm |
| 63 | fnn |
| 160 | fno |
| 113 | fnp |
| 18 | fnq |
| 59 | fnr |
| 183 | fns |
| 137 | fnt |
| 49 | fnu |
| 42 | fnv |
| 48 | fnw |
| 39 | fnx |
| 29 | fny |
| 23 | fnz |