| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must be [verb] into the [noun] | 15 |
|
| 2 | must [be] [vb pp] into the [noun] | 15 |
|
| 3 | must [be] [verb] into the [noun] | 15 |
|
| 4 | must [be] [verb] into the [noun sg] | 13 |
|
