| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] [pron] [adv] | 35516 |
|
| 2 | [pron] could [adv] | 27371 |
|
| 3 | [vb past] [pron] could | 2700 |
|
| 4 | [vb past] could [adv] | 58 |
|
