| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must [be] [verb] for | 340 |
|
| 2 | must [be] [vb pp] for | 322 |
|
| 3 | [modal v] [be] found for | 77 |
|
| 4 | [vb mod] [be] found for | 77 |
|
| 5 | must [be] found [prep] | 38 |
|
| 6 | must [be] find for | 12 |
|
| 7 | must [be] found for | 12 |
|
