| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [adv] be | 4063 |
|
| 2 | could [pron] [adv] | 734 |
|
| 3 | could [pron] be | 677 |
|
| 4 | [pron] [adv] be | 418 |
|
