| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] could have [vb pp] | 3144 |
|
| 2 | [pron] could have a | 355 |
|
| 3 | could have [vb pp] a | 273 |
|
| 4 | [pron] have [vb pp] a | 36 |
|
