| Count | Prefix |
|---|---|
| 103 | tf- |
| 20 | tf. |
| 4 | tf0 |
| 58 | tf1 |
| 39 | tf2 |
| 12 | tf3 |
| 7 | tf4 |
| 4 | tf5 |
| 5 | tf6 |
| 3 | tf7 |
| 24 | tf8 |
| 2 | tf9 |
| 249 | tfa |
| 105 | tfb |
| 354 | tfc |
| 79 | tfd |
| 126 | tfe |
| 100 | tff |
| 138 | tfg |
| 94 | tfh |
| 229 | tfi |
| 21 | tfj |
| 59 | tfk |
| 181 | tfl |
| 187 | tfm |
| 87 | tfn |
| 228 | tfo |
| 151 | tfp |
| 11 | tfq |
| 113 | tfr |
| 302 | tfs |
| 206 | tft |
| 56 | tfu |
| 33 | tfv |
| 82 | tfw |
| 44 | tfx |
| 32 | tfy |
| 17 | tfz |