| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] [vb past] at | 10040 |
|
| 2 | [noun] at time | 409 |
|
| 3 | [noun] [vb past] time | 217 |
|
| 4 | [vb past] at time | 41 |
|
