| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [Wh adv] they used [verb] it | 5 |
|
| 2 | [be] [Wh adv] they used [verb] it | 5 |
|
| 3 | 's [Wh adv] they used [verb] it | 5 |
|
| 4 | [is] [Wh adv] they used [verb] it | 5 |
|
