| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [subord] [pron] could [vb infin] [noun] | 385 |
|
| 2 | [prep] [subord] [pron] could [vb infin] | 143 |
|
| 3 | [prep] [pron] could [vb infin] [noun] | 23 |
|
