| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] [vb past] [pron] [vb mod] | 984 |
|
| 2 | [adv] [vb past] [pron] [modal v] | 984 |
|
| 3 | [adv] [verb] [pron] could | 873 |
|
| 4 | [adv] [vb past] [pron] could | 164 |
|
