| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh det] [modal v] [be] [adv] [adj] | 447 |
|
| 2 | [pron] must [be] [adv] [adj] | 337 |
|
| 3 | [Wh det] must [be] [adv] [adj] | 9 |
|
