| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [vb infin] [art] [noun] [pers pn] | 96 |
|
| 2 | [modal v] [vb infin] a [noun] [pers pn] | 70 |
|
| 3 | could [vb infin] a [noun] [pron] | 43 |
|
| 4 | could [verb] a [noun] [pers pn] | 13 |
|
