| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] must [adv] [vb infin] [vb pp] a | 7 |
|
| 2 | [pers pn] must [adv] [vb infin] [vb pp] a | 5 |
|
| 3 | must [adv] [vb infin] [vb pp] a [noun sg] | 9 |
|
| 4 | must [adv] [vb infin] [vb pp] a [noun] | 9 |
|
