| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | what [noun] [modal v] | 2125 |
|
| 2 | what [noun sg] [modal v] | 1081 |
|
| 3 | [pron] extent [modal v] | 60 |
|
| 4 | what extent [modal v] | 59 |
|
| 5 | [Wh det] extent [modal v] | 59 |
|
| 6 | what extent [modal v] | 59 |
|
