| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] [prep] [det] [noun] | 1003 |
|
| 2 | must [be] [prep] [noun] | 239 |
|
| 3 | must [be] [det] [noun] | 211 |
|
| 4 | must [prep] [det] [noun] | 66 |
|
| 5 | must [be] [prep] [det] | 48 |
|
