| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh adv] [pron] [modal v] [vb infin] [noun] [noun] | 56 |
|
| 2 | [adv] [pron] could [vb infin] [noun] [noun] | 37 |
|
| 3 | [Wh adv] [pron] could [verb] [noun] [noun] | 14 |
|
