| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must [be] [verb] | 12065 |
|
| 2 | [be] [verb] [det] | 2725 |
|
| 3 | must [verb] [det] | 1455 |
|
| 4 | must [be] [det] | 448 |
|
