| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun prp] could [vb infin] [noun] | 282 |
|
| 2 | [noun prp] could [vb infin] [adv] | 183 |
|
| 3 | could [vb infin] [adv] [noun] | 96 |
|
