| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh adv] [pers pn] [modal v] | 8561 |
|
| 2 | [Wh adv] [pers pn] [vb mod] | 8561 |
|
| 3 | [adv] [pers pn] could | 6040 |
|
| 4 | [Wh adv] [pron] could | 1347 |
|
| 5 | [Wh adv] [pers pn] could | 1275 |
|
