| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [pron] could [vb infin] | 416 |
|
| 2 | [prep] it [vb mod] [vb infin] | 330 |
|
| 3 | [prep] it [modal v] [vb infin] | 330 |
|
| 4 | [prep] it could [verb] | 17 |
|
| 5 | [prep] it could [vb infin] | 17 |
|
