| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [modal v] have [verb] at | 23 |
|
| 2 | it [vb mod] have [verb] at | 23 |
|
| 3 | it [modal v] have [verb] at | 22 |
|
| 4 | it [modal v] have [vb pp] at | 21 |
|
| 5 | it must have [verb] at | 10 |
|
| 6 | it must have [verb] at | 10 |
|
| 7 | it [modal v] have happen at | 5 |
|
