| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [adv] [verb] [noun] | 1738 |
|
| 2 | could [adv] [verb] [noun] | 813 |
|
| 3 | [modal v] still [verb] [noun] | 305 |
|
| 4 | could still [verb] [noun] | 52 |
|
