| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must [be] [verb] against | 80 |
|
| 2 | must [be] set [prep] | 32 |
|
| 3 | must [be] set [prep] | 32 |
|
| 4 | [modal v] [be] set against | 29 |
|
| 5 | must [be] set against | 8 |
|
