| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] be used [prep] | 1099 |
|
| 2 | be used [prep] [det] | 878 |
|
| 3 | [prep] be [prep] [det] | 662 |
|
| 4 | [prep] be used [det] | 7 |
|
