| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [pron] [pron] could [vb infin] | 765 |
|
| 2 | [pron] [pron] could [adv] [vb infin] | 294 |
|
| 3 | [prep] [pron] [pron] could [adv] | 137 |
|
| 4 | [prep] [pron] could [adv] [vb infin] | 48 |
|
