| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [pron] [vb infin] [prep] | 391 |
|
| 2 | could [vb infin] [pn reflx] [prep] | 177 |
|
| 3 | [pron] [vb infin] [pn reflx] [prep] | 124 |
|
| 4 | could [pron] [vb infin] [pn reflx] | 29 |
|
