| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] [verb] [to-vb] | 18266 |
|
| 2 | must [be] [verb] | 12065 |
|
| 3 | must [verb] [to-vb] | 730 |
|
| 4 | must [be] [to-vb] | 166 |
|
