| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [to-vb] how they can [be] [verb] | 6 |
|
| 2 | [to-vb] [Wh adv] they can [be] [vb pp] | 6 |
|
| 3 | [to-vb] [Wh adv] they can be [verb] | 6 |
|
