| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh det] must be [verb] | 479 |
|
| 2 | must be [verb] [adj] | 284 |
|
| 3 | [Wh det] must be [adj] | 50 |
|
| 4 | [Wh det] must [verb] [adj] | 20 |
|
