| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] what extent does [art] | 15 |
|
| 2 | to what extent does [art] | 15 |
|
| 3 | [prep] what extent does [art] | 15 |
|
| 4 | to what extent does [art] | 15 |
|
| 5 | what extent does [art] [noun sg] | 12 |
|
| 6 | what extent does [art] [noun] | 12 |
|
