| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [det] [be] [Wh adv] [pers pn] [modal v] | 539 |
|
| 2 | [det] [be] [adv] [pers pn] could | 47 |
|
| 3 | [det] [be] [Wh adv] [pron] could | 38 |
|
| 4 | [adj] [be] [Wh adv] [pers pn] could | 37 |
|
