| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [be] [prep] this [noun] | 135 |
|
| 2 | must [verb] [be] [prep] [noun] | 40 |
|
| 3 | must [verb] [prep] this [noun] | 22 |
|
| 4 | must [verb] [be] [prep] this | 8 |
|
| 5 | must [be] [prep] this [noun] | 5 |
|
