| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adj] extent to [adj] [noun] | 5 |
|
| 2 | extent to which [adj] [noun] | 299 |
|
| 3 | extent to [Wh det] [adj] [noun] | 299 |
|
| 4 | extent to [pron] [adj] [noun] | 299 |
|
| 5 | extent to which [adj] [noun] | 299 |
|
