| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [be] some [noun] | 248 |
|
| 2 | it must [be] [noun] | 147 |
|
| 3 | must [be] some [noun] | 135 |
|
| 4 | it must [be] some | 11 |
|
