| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] have [vb pp] at any time | 8 |
|
| 2 | [vb mod] have [vb pp] at any time | 8 |
|
| 3 | [vb mod] have [vb pp] at any time | 8 |
|
| 4 | could have [vb pp] at any time | 7 |
|
| 5 | [vb mod] have happened at any time | 5 |
|
