| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must be [vb pp] to [noun] | 88 |
|
| 2 | must [be] [vb pp] to [noun sg] | 36 |
|
| 3 | must [be] [vb pp] to [noun pl] | 24 |
|
| 4 | must [be] [vb pp] to [noun prp] | 22 |
|
| 5 | must [be] [vb pp] to lifespan | 10 |
|
| 6 | must [be] [vb pp] to lifespan | 10 |
|
| 7 | must [be] known to [noun] | 8 |
|
| 8 | must [be] given to [noun] | 6 |
|
| 9 | must [be] sent to [noun] | 6 |
|
| 10 | must [be] made to [noun] | 5 |
|
| 11 | must [be] related to [noun] | 5 |
|
| 12 | must [be] referred to [noun] | 5 |
|
