| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | what extent [vb mod] | 59 |
|
| 2 | what extent can | 26 |
|
| 3 | what extent can | 26 |
|
| 4 | what extent should | 14 |
|
| 5 | what extent should | 14 |
|
| 6 | what extent will | 10 |
|
| 7 | what extent will | 10 |
|
