| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] [pron] could | 2700 |
|
| 2 | [vb past] [pron] she | 1005 |
|
| 3 | [vb past] she could | 506 |
|
| 4 | [pron] she could | 496 |
|
