| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] which [modal v] [be] | 5649 |
|
| 2 | [noun] [pron] must [be] | 915 |
|
| 3 | [noun] [Wh det] must [be] | 340 |
|
| 4 | [noun] which must [be] | 333 |
|
