| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [Wh adv] [pers pn] could | 388 |
|
| 2 | [be] [verb] [Wh adv] [pers pn] | 377 |
|
| 3 | [be] [verb] [pers pn] could | 188 |
|
| 4 | [be] [Wh adv] [pers pn] could | 52 |
|
