| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [det] could [vb infin] [noun] | 113 |
|
| 2 | [adv] [det] could [vb infin] | 85 |
|
| 3 | [adv] could [vb infin] [noun] | 34 |
|
| 4 | [adv] [det] [vb infin] [noun] | 21 |
|
