| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be used [prep] [adj] | 580 |
|
| 2 | not be used [prep] | 262 |
|
| 3 | not be [prep] [adj] | 52 |
|
| 4 | not used [prep] [adj] | 24 |
|
