| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] have [verb] | 50340 |
|
| 2 | [vb mod] have [verb] | 50340 |
|
| 3 | should [verb] [verb] | 6472 |
|
| 4 | should have [verb] | 4259 |
|
