| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [vb pp] [subord] the | 1703 |
|
| 2 | must be [vb pp] [subord] | 499 |
|
| 3 | must be [vb pp] the | 82 |
|
| 4 | must be [subord] the | 12 |
|
