| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must [be] seen [prep] [noun sg] [prep] | 7 |
|
| 2 | must [be] see [prep] [noun sg] [prep] | 7 |
|
| 3 | must be see [prep] [noun sg] [prep] | 7 |
|
