| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] could [vb infin] [noun] | 2804 |
|
| 2 | [Wh adv] [pron] could [vb infin] | 763 |
|
| 3 | [Wh adv] [pron] could [noun] | 8 |
|
