| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] must [vb infin] at the [adj] | 6 |
|
| 2 | must [vb infin] at the [adj] [noun] | 10 |
|
| 3 | must [vb infin] at the [adj] [noun sg] | 10 |
|
