| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have [been] under [noun] | 193 |
|
| 2 | have [been] [prep] discussion | 19 |
|
| 3 | have [be] under discussion | 12 |
|
| 4 | [verb] [been] under discussion | 12 |
|
