| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | at what [vb mod] | 46 |
|
| 2 | at [Wh det] might | 11 |
|
| 3 | at [Wh det] can | 8 |
|
| 4 | at [Wh det] could | 6 |
|
| 5 | at [Wh det] would | 6 |
|
| 6 | at [Wh det] will | 5 |
|
