| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] what used | 87 |
|
| 2 | of [Wh det] used | 29 |
|
| 3 | in [Wh det] used | 26 |
|
| 4 | to [Wh det] used | 7 |
|
| 5 | on [Wh det] used | 6 |
|
