| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] what extent can [noun] | 9 |
|
| 2 | to what extent can [noun] | 9 |
|
| 3 | [prep] what extent can [noun] | 9 |
|
| 4 | to what extent can [noun] | 9 |
|
| 5 | what extent can [adj] [noun] | 5 |
|
