| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [be] [adj] | 36043 |
|
| 2 | must [be] [adj] | 3715 |
|
| 3 | must [prep] [be] | 149 |
|
| 4 | must [prep] [adj] | 9 |
|
