| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] [pers pn] at | 1422 |
|
| 2 | [vb past] at once | 429 |
|
| 3 | [pers pn] at once | 291 |
|
| 4 | [vb past] [pers pn] once | 245 |
|
