| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh adv] [pron] [modal v] [vb infin] | 5150 |
|
| 2 | [adv] it [modal v] [vb infin] | 2369 |
|
| 3 | [Wh adv] it [modal v] [verb] | 521 |
|
