| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] [pers pn] [pron] [modal v] | 706 |
|
| 2 | [vb past] [pron] [pron] could | 351 |
|
| 3 | [verb] [pers pn] [pron] could | 252 |
|
