| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] [pron] could [vb infin] | 2286 |
|
| 2 | [prep] [pron] [pron] could | 1214 |
|
| 3 | [prep] [pron] could [vb infin] | 416 |
|
