| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | which be [be] used | 38 |
|
| 2 | [Wh det] be [being] used | 38 |
|
| 3 | [Wh det] be being used | 38 |
|
| 4 | [Wh det] be be used | 38 |
|
| 5 | [Wh det] is [be] used | 19 |
|
| 6 | [Wh det] are [be] used | 12 |
|
