| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] [adv] [verb] their [noun] | 573 |
|
| 2 | could [adv] [verb] [pron] [noun] | 507 |
|
| 3 | could [adv] [verb] [pos pn] [noun] | 477 |
|
| 4 | could [adv] [verb] their [noun] | 206 |
|
| 5 | could [adv] [verb] their [noun] | 90 |
|
