| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] [pron] could | 25679 |
|
| 2 | before [pron] [modal v] | 2314 |
|
| 3 | before [pron] [vb mod] | 2314 |
|
| 4 | before [pron] could | 1231 |
|
