| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh adv] it [is] used | 25 |
|
| 2 | [Wh adv] it is used | 23 |
|
| 3 | how it [is] used | 19 |
|
| 4 | where it [is] used | 5 |
|
