| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must be [verb] to | 714 |
|
| 2 | must be hold [prep] | 37 |
|
| 3 | must be hold [prep] | 37 |
|
| 4 | [modal v] be hold to | 34 |
|
| 5 | must [be] hold to | 6 |
|
| 6 | must be hold to | 6 |
|
