| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh det] extent [vb mod] these [noun] | 6 |
|
| 2 | [Wh det] extent [modal v] these [noun] | 6 |
|
| 3 | what extent [modal v] these [noun] | 6 |
|
| 4 | [Wh det] extent [modal v] these [noun pl] | 5 |
|
