| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must be found [verb] | 12 |
|
| 2 | must be found [verb] | 12 |
|
| 3 | must [be] found [to-vb] | 12 |
|
| 4 | must [be] found [verb] | 12 |
|
