| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must [verb] [prep] [art] [adj] [noun sg] | 294 |
|
| 2 | [modal v] [verb] at [art] [adj] [noun sg] | 285 |
|
| 3 | must [verb] at [art] [adj] [noun] | 21 |
|
