| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must [adv] [be] [vb pp] | 1540 |
|
| 2 | [modal v] always [be] [vb pp] | 584 |
|
| 3 | [vb mod] always [be] [vb pp] | 584 |
|
| 4 | must always [be] [verb] | 109 |
|
| 5 | must always [be] [vb pp] | 96 |
|
