| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb base] [pron] [modal v] [verb] it | 579 |
|
| 2 | [vb base] [pron] could [verb] [pron] | 281 |
|
| 3 | [verb] [pron] could [verb] it | 221 |
|
