| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must [be] [verb] subject [prep] | 5 |
|
| 2 | must [be] [verb] subject [prep] | 5 |
|
| 3 | must [be] [verb] subject to | 5 |
|
| 4 | must [be] [verb] subject to | 5 |
|
