| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] have [adv] [verb] [prep] | 122 |
|
| 2 | must [verb] [adv] [verb] [prep] | 31 |
|
| 3 | must have [adv] [verb] [prep] | 22 |
|
| 4 | must have [adv] [verb] [prep] | 22 |
|
