| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | i [modal v] [not/n't] [vb infin] | 21543 |
|
| 2 | [pron] could [not/n't] [vb infin] | 14304 |
|
| 3 | i could [adv] [vb infin] | 5587 |
|
| 4 | i could [not/n't] [verb] | 4346 |
|
