| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh adv] [adv] [pron] could be | 9 |
|
| 2 | [Wh adv] [adv] [pers pn] could [be] | 9 |
|
| 3 | how [adv] [pron] could [be] | 8 |
|
