| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb base] they should [verb] | 64 |
|
| 2 | whether they should [verb] | 40 |
|
| 3 | [vb base] whether they [verb] | 27 |
|
| 4 | [vb base] whether they should | 5 |
|
