| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | there have been report [prep] [noun] | 12 |
|
| 2 | [ex0] have been report [prep] [noun] | 12 |
|
| 3 | [pron] have been report [prep] [noun] | 12 |
|
| 4 | there have been report [prep] [noun] | 12 |
|
