| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] [not/n't] [vb infin] [pron] | 23745 |
|
| 2 | [vb mod] [not/n't] [vb infin] [pron] | 23745 |
|
| 3 | could [adv] [vb infin] [pron] | 7430 |
|
| 4 | could [not/n't] [verb] [pron] | 5483 |
|
| 5 | could [not/n't] [vb infin] [pron] | 5480 |
|
