| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must be see [prep] [be] | 32 |
|
| 2 | must be see [prep] be | 32 |
|
| 3 | must be see [prep] [be] | 32 |
|
| 4 | must be seen [prep] [be] | 32 |
|
| 5 | must be see to [be] | 32 |
|
| 6 | must be see to [be] | 32 |
|
