| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | they could [verb] [adv] | 538 |
|
| 2 | they [vb mod] come [adv] | 339 |
|
| 3 | they [modal v] come [adv] | 339 |
|
| 4 | [pron] could come [adv] | 174 |
|
| 5 | they could come [adv] | 16 |
|
