| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] [be] [verb] on a | 561 |
|
| 2 | [modal v] [be] [verb] on a | 561 |
|
| 3 | must [be] [verb] [prep] a | 473 |
|
| 4 | must [be] [verb] [prep] a | 473 |
|
| 5 | must [be] [verb] on [art] | 112 |
|
| 6 | must [be] [verb] on [art] | 112 |
|
| 7 | must [be] [verb] on a | 36 |
|
| 8 | must [be] [verb] on a | 28 |
|
| 9 | must [be] [verb] on a | 28 |
|
