| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] what extent be [noun] | 17 |
|
| 2 | [prep] what extent [det] [noun] | 14 |
|
| 3 | [prep] what extent be [det] | 13 |
|
| 4 | [prep] what be [det] [noun] | 8 |
|
| 5 | what extent be [det] [noun] | 5 |
|
