| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it be [art] [noun] | 31806 |
|
| 2 | must be [art] [noun] | 1198 |
|
| 3 | it must be [art] | 347 |
|
| 4 | it must be [noun] | 147 |
|
