| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] [be] [vb pp] for [adj] | 1248 |
|
| 2 | must [be] [vb pp] [prep] [adj] | 971 |
|
| 3 | must [be] [verb] for [adj] | 83 |
|
| 4 | must [be] [vb pp] for [adj] | 83 |
|
