| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it must [be] [verb] | 1448 |
|
| 2 | it must [be] [vb pp] | 1391 |
|
| 3 | it [vb mod] [be] assumed | 110 |
|
| 4 | it [modal v] [be] assumed | 110 |
|
| 5 | [pron] must [be] assumed | 18 |
|
| 6 | it must [be] assumed | 14 |
|
| 7 | it must [be] assume | 14 |
|
