| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is [not/n't] [pron] [pron] could | 6 |
|
| 2 | is not [pron] [pron] could | 6 |
|
| 3 | is [adv] [pron] [pers pn] could | 5 |
|
