| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [been] under [noun] | 206 |
|
| 2 | [been] under [noun sg] | 185 |
|
| 3 | [be] under discussion | 59 |
|
| 4 | [been] [prep] discussion | 17 |
|
| 5 | [been] under discussion | 12 |
|
