| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh pn] [vb past] [to-vb] | 2451 |
|
| 2 | [vb past] [to-vb] at | 1336 |
|
| 3 | [Wh pn] [vb past] at | 613 |
|
