| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have [vb pp] [pron] [det] | 2644 |
|
| 2 | could have [vb pp] [pron] | 1280 |
|
| 3 | could have [vb pp] [det] | 348 |
|
| 4 | could have [pron] [det] | 14 |
|
