| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] must [vb infin] [verb] for a | 5 |
|
| 2 | must [vb infin] been [verb] for a | 6 |
|
| 3 | must [vb infin] be [verb] for a | 6 |
|
| 4 | must [vb infin] [been] [verb] for a | 6 |
|
| 5 | must [vb infin] [be] [verb] for a | 6 |
|
| 6 | must [vb infin] [verb] for a [noun] | 5 |
|
| 7 | must [vb infin] [verb] for a [noun sg] | 5 |
|
