| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [noun sg] at [art] | 2224 |
|
| 2 | must [verb] at [art] | 93 |
|
| 3 | must [verb] [noun sg] at | 17 |
|
| 4 | must [verb] [noun sg] [art] | 6 |
|
