| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must [be] [verb] [prep] | 5095 |
|
| 2 | must [be] [vb pp] [prep] | 4919 |
|
| 3 | [modal v] [be] said [prep] | 581 |
|
| 4 | must [be] say [prep] | 21 |
|
| 5 | must [be] said [prep] | 20 |
|
