| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | to what extent [pron] | 57 |
|
| 2 | [prep] what extent [pers pn] | 45 |
|
| 3 | [prep] what extent they | 19 |
|
| 4 | [prep] what extent they | 19 |
|
| 5 | [prep] what extent it | 13 |
|
| 6 | [prep] what extent it | 13 |
|
| 7 | [prep] what extent [pos pn] | 9 |
|
| 8 | [prep] what extent he | 6 |
|
| 9 | [prep] what extent he | 6 |
|
