| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh adv] it [modal v] | 1414 |
|
| 2 | [Wh adv] it [vb mod] | 1414 |
|
| 3 | [Wh adv] [pron] could | 1347 |
|
| 4 | [adv] it could | 515 |
|
| 5 | [Wh adv] it could | 152 |
|
