| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] [verb] at the | 7540 |
|
| 2 | must [be] [verb] at | 249 |
|
| 3 | must [be] [verb] the | 142 |
|
| 4 | must [verb] at the | 84 |
|
| 5 | must [be] at the | 18 |
|
