| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [pron] [pron] could [vb infin] | 765 |
|
| 2 | [pron] [pron] could [vb infin] [prep] | 528 |
|
| 3 | [prep] [pron] could [vb infin] [prep] | 59 |
|
| 4 | [prep] [pron] [pron] could [prep] | 9 |
|
