| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | what extent [noun] | 42 |
|
| 2 | [Wh det] extent [noun pl] | 17 |
|
| 3 | [Wh det] extent [noun sg] | 16 |
|
| 4 | [Wh det] extent [noun prp] | 8 |
|
