| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] [be] used in | 631 |
|
| 2 | which [vb mod] [be] used | 610 |
|
| 3 | which [be] used in | 94 |
|
| 4 | which [vb mod] [be] in | 79 |
|
