| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must be [vb pp] [adj] [noun] | 37 |
|
| 2 | must be [vb pp] [adj] [noun sg] | 29 |
|
| 3 | must be given [adj] [noun] | 14 |
|
| 4 | must be [vb pp] [adj] [noun pl] | 8 |
|
