| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [pron] [pron] could [verb] | 765 |
|
| 2 | [prep] it [pron] [vb mod] [verb] | 216 |
|
| 3 | [prep] it [pron] [modal v] [verb] | 216 |
|
| 4 | [prep] it [pron] could [verb] | 35 |
|
