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