| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun pl] [verb] [verb] at | 569 |
|
| 2 | [noun pl] must [verb] [verb] | 435 |
|
| 3 | must [verb] [verb] at | 64 |
|
| 4 | [noun pl] must [verb] at | 36 |
|
