| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must [be] [verb] [prep] [art] | 2090 |
|
| 2 | [modal v] [be] hold [prep] [art] | 354 |
|
| 3 | must [be] hold [prep] [art] | 8 |
|
| 4 | must [be] hold [prep] [art] | 8 |
|
