| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could n't be [verb] | 377 |
|
| 2 | could n't [pron] [verb] | 332 |
|
| 3 | could [pron] be [verb] | 122 |
|
| 4 | n't [pron] be [verb] | 71 |
|
| 5 | could n't [pron] be | 22 |
|
