| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must [be] [verb] [prep] [adj] | 394 |
|
| 2 | must [be] [vb pp] [prep] [adj] | 380 |
|
| 3 | [modal v] [be] treated [prep] [adj] | 66 |
|
| 4 | [vb mod] [be] treated [prep] [adj] | 66 |
|
| 5 | must [be] treated [prep] [adj] | 15 |
|
| 6 | must [be] treat [prep] [adj] | 8 |
|
| 7 | must [be] treated [prep] [adj] | 8 |
|
| 8 | must [be] treated [prep] [adj] | 8 |
|
