| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] [modal v] be seen [prep] [be] | 37 |
|
| 2 | [pron] must be [vb pp] [prep] [be] | 11 |
|
| 3 | [pron] must be [verb] [prep] [be] | 11 |
|
| 4 | [pron] must be seen [prep] [be] | 5 |
|
| 5 | [pron] must [be] seen [prep] [be] | 5 |
|
| 6 | [pron] must be see [prep] [be] | 5 |
|
