| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] [pron] [noun] | 86752 |
|
| 2 | [vb past] [pron] could | 2700 |
|
| 3 | [pron] [noun] could | 2399 |
|
| 4 | [vb past] [noun] could | 185 |
|
