| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] [be] [adj] to [be] | 274 |
|
| 2 | [vb mod] [be] [adj] to [be] | 274 |
|
| 3 | must [be] [adj] [prep] [be] | 53 |
|
| 4 | must [be] [adj] [prep] [be] | 53 |
|
| 5 | must [be] [adj] to [be] | 37 |
|
| 6 | must [be] [adj] to [be] | 36 |
|
| 7 | must [be] [adj] to [be] | 36 |
|
| 8 | must [be] [adj] to [be] | 36 |
|
