| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] [verb] [Wh adv] [pers pn] | 891 |
|
| 2 | [vb mod] [verb] [Wh adv] [pers pn] | 891 |
|
| 3 | could [verb] [adv] [pers pn] | 145 |
|
| 4 | could [verb] [Wh adv] [pron] | 114 |
|
| 5 | could [verb] [Wh adv] [pers pn] | 93 |
|
