| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] must be [vb pp] [prep] | 3207 |
|
| 2 | [noun] it be [vb pp] [prep] | 696 |
|
| 3 | it must be [vb pp] [prep] | 288 |
|
| 4 | [noun] it must be [vb pp] | 96 |
|
| 5 | [noun] it must be [prep] | 11 |
|
