| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must [verb] [pron] at | 19 |
|
| 2 | must [vb infin] [pron] at | 19 |
|
| 3 | must [verb] [pers pn] at | 13 |
|
| 4 | must [verb] he at | 5 |
|
| 5 | must [verb] him at | 5 |
|
