| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must have [verb] [prep] [art] | 225 |
|
| 2 | have [verb] off [prep] [art] | 201 |
|
| 3 | must have [verb] off [prep] | 10 |
|
| 4 | must [verb] off [prep] [art] | 5 |
|
