| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [Wh adv] they could | 67 |
|
| 2 | [verb] how they could | 47 |
|
| 3 | [to-vb] [Wh adv] they could | 25 |
|
| 4 | see [Wh adv] they could | 20 |
|
| 5 | [vb infin] [Wh adv] they could | 14 |
|
| 6 | [vb past] [Wh adv] they could | 13 |
|
| 7 | to see [Wh adv] they could | 10 |
|
| 8 | [v-ing] [Wh adv] they could | 9 |
|
| 9 | [verb] why they could | 8 |
|
| 10 | see [Wh adv] they could | 8 |
|
| 11 | ask [Wh adv] they could | 8 |
|
| 12 | [verb] where they could | 7 |
|
| 13 | know [Wh adv] they could | 5 |
|
| 14 | wonder [Wh adv] they could | 5 |
|
