| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] be see [prep] [be] | 155 |
|
| 2 | must be [verb] [prep] [be] | 76 |
|
| 3 | must [be] see [prep] [be] | 32 |
|
| 4 | must be see [prep] [be] | 32 |
|
