| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] [adv] [verb] [pos pn] [noun] | 2649 |
|
| 2 | could [adv] [verb] [pos pn] [noun] | 1323 |
|
| 3 | could [adv] [verb] [pron] [noun] | 507 |
|
