| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] must be [vb pp] for | 224 |
|
| 2 | [noun] must be [vb pp] [adj] | 140 |
|
| 3 | [noun] must be [adj] for | 55 |
|
| 4 | must be [vb pp] [adj] for | 11 |
|
| 5 | [noun] be [vb pp] [adj] for | 8 |
|
