| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] must be [prep] [adj] | 33 |
|
| 2 | [noun sg] must be [prep] [adj] | 21 |
|
| 3 | [noun] must be of [adj] | 13 |
|
| 4 | [noun] must be in [adj] | 12 |
|
| 5 | [noun pl] must be [prep] [adj] | 10 |
|
