| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [modal v] be [adj] | 10086 |
|
| 2 | [pron] must be [adj] | 1754 |
|
| 3 | it must be [adj] | 589 |
|
| 4 | it must [be] [adj] | 473 |
|
| 5 | it must be [adj] | 473 |
|
| 6 | it must [be] [adj] | 473 |
|
