| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must [be] [adj] | 4588 |
|
| 2 | must [be] [adj] | 3713 |
|
| 3 | [modal v] [be] available | 1455 |
|
| 4 | must [be] available | 60 |
|
| 5 | must [be] available | 60 |
|
