| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] [vb infin] [noun] [verb] [pers pn] | 226 |
|
| 2 | could [vb infin] [noun] [verb] [pron] | 61 |
|
| 3 | could [verb] [noun] [verb] [pers pn] | 27 |
|
