| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] [prep] [adj] be | 111 |
|
| 2 | [vb mod] [prep] [adj] be | 111 |
|
| 3 | must [prep] [adj] be | 5 |
|
| 4 | must [prep] [adj] [be] | 5 |
|
