| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | they could [vb infin] [prep] | 595 |
|
| 2 | could [vb infin] [pn reflx] [prep] | 177 |
|
| 3 | they could [vb infin] [pn reflx] | 38 |
|
| 4 | they [vb infin] [pn reflx] [prep] | 8 |
|
