| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | they could [verb] | 4234 |
|
| 2 | they could [vb infin] | 4177 |
|
| 3 | they [modal v] come | 583 |
|
| 4 | [pron] could come | 351 |
|
| 5 | [pers pn] could come | 319 |
|
| 6 | they could come | 33 |
|
| 7 | they could come | 32 |
|
