| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] [vb past] [adv] [pron] could | 121 |
|
| 2 | they [vb past] [adv] [pron] [modal v] | 50 |
|
| 3 | they [verb] [adv] [pron] could | 15 |
|
