| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | only [prep] be used | 12 |
|
| 2 | only to [be] used | 12 |
|
| 3 | only [prep] [be] used | 12 |
|
| 4 | only to [be] used | 12 |
|
| 5 | only [prep] [be] used | 12 |
|
