| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] what [vb mod] | 192 |
|
| 2 | [be] what [modal v] | 192 |
|
| 3 | [be] [pron] used | 36 |
|
| 4 | [be] what used | 11 |
|
