| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] could [adv] be | 2675 |
|
| 2 | [pron] could not be | 1288 |
|
| 3 | [pron] could not [adv] | 1232 |
|
| 4 | could not [adv] be | 276 |
|
| 5 | [pron] not [adv] be | 14 |
|
