| Count | Prefix |
|---|---|
| 260 | nt- |
| 30 | nt. |
| 5 | nt0 |
| 19 | nt1 |
| 27 | nt2 |
| 13 | nt3 |
| 17 | nt4 |
| 4 | nt5 |
| 8 | nt6 |
| 7 | nt7 |
| 4 | nt8 |
| 10 | nt9 |
| 350 | nta |
| 156 | ntb |
| 537 | ntc |
| 198 | ntd |
| 491 | nte |
| 175 | ntf |
| 174 | ntg |
| 420 | nth |
| 409 | nti |
| 51 | ntj |
| 112 | ntk |
| 256 | ntl |
| 204 | ntm |
| 194 | ntn |
| 237 | nto |
| 283 | ntp |
| 16 | ntq |
| 419 | ntr |
| 616 | nts |
| 514 | ntt |
| 164 | ntu |
| 184 | ntv |
| 163 | ntw |
| 165 | ntx |
| 63 | nty |
| 47 | ntz |