| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] [vb past] [pron] could | 1640 |
|
| 2 | [pron] [vb past] [pers pn] could | 1607 |
|
| 3 | [pron] [vb past] it [vb mod] | 1346 |
|
| 4 | [pron] [vb past] it [modal v] | 1346 |
|
| 5 | [pron] [verb] it could | 298 |
|
| 6 | [pron] [vb past] it could | 114 |
|
| 7 | [pron] [vb past] it could | 114 |
|
