| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb base] it [modal v] | 2657 |
|
| 2 | [vb base] it [vb mod] | 2657 |
|
| 3 | [vb base] [pron] could | 1838 |
|
| 4 | [verb] it could | 715 |
|
| 5 | [vb base] it could | 207 |
|
