| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must [be] [vb pp] [prep] the | 1422 |
|
| 2 | [be] [vb pp] [prep] the [det] | 619 |
|
| 3 | must [be] [vb pp] [prep] [det] | 404 |
|
| 4 | must [be] [prep] the [det] | 11 |
|
