| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have [been] used [prep] | 854 |
|
| 2 | [adj] have [been] [prep] | 238 |
|
| 3 | [adj] have [been] used | 57 |
|
| 4 | [adj] [been] used [prep] | 6 |
|
