| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | what have [be] | 1348 |
|
| 2 | [vb past] what [be] | 781 |
|
| 3 | [vb past] have [be] | 754 |
|
| 4 | [vb past] what have | 228 |
|
