| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have [be] reported [prep] | 283 |
|
| 2 | have previously [be] [prep] | 17 |
|
| 3 | have previously [be] reported | 16 |
|
| 4 | previously [be] reported [prep] | 6 |
|
