| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] could and [vb mod] [verb] | 21 |
|
| 2 | [pers pn] could and [vb mod] [verb] | 19 |
|
| 3 | it [modal v] and [vb mod] [verb] | 13 |
|
| 4 | it could [conj] [vb mod] [verb] | 7 |
|
| 5 | it could and [modal v] [verb] | 6 |
|
| 6 | it could and [vb mod] [verb] | 6 |
|
