| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [noun] at [art] | 3928 |
|
| 2 | must [verb] at [art] | 93 |
|
| 3 | must [verb] [noun] at | 21 |
|
| 4 | must [verb] [noun] [art] | 14 |
|
