| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [verb] [prep] [noun] | 1712 |
|
| 2 | [modal v] [verb] at [noun] | 822 |
|
| 3 | [vb mod] [verb] at [noun] | 822 |
|
| 4 | could [verb] at [noun] | 87 |
|
