| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] i [verb] [prep] | 970 |
|
| 2 | could [pron] [verb] [prep] | 401 |
|
| 3 | could [pers pn] [verb] [prep] | 385 |
|
| 4 | could i [verb] [prep] | 85 |
|
