| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must [verb] [pron] at [art] | 8 |
|
| 2 | must [verb] [pron] at [art] | 8 |
|
| 3 | must [vb infin] [pron] at [art] | 8 |
|
| 4 | must [verb] [pron] at the | 7 |
|
| 5 | must [verb] [pron] at the | 7 |
|
