| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must be [noun prp] [noun] | 70 |
|
| 2 | [adj] must be [noun] | 47 |
|
| 3 | [adj] must be [noun prp] | 24 |
|
| 4 | [adj] be [noun prp] [noun] | 11 |
|
