| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must be [vb pp] [to-vb] [adj] [noun] | 37 |
|
| 2 | must be [vb pp] [verb] [adj] [noun sg] | 22 |
|
| 3 | must be [vb pp] [verb] [adj] [noun] | 21 |
|
| 4 | must be [vb pp] [verb] [adj] [noun pl] | 17 |
|
| 5 | must be [vb pp] [verb] [det] [noun] | 15 |
|
| 6 | must be taken [verb] [adj] [noun] | 6 |
|
