| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] [been] under [noun] | 103 |
|
| 2 | [vb past] [been] under [noun sg] | 94 |
|
| 3 | [verb] [been] under discussion | 12 |
|
| 4 | [vb past] [been] [prep] discussion | 8 |
|
| 5 | [vb past] [be] under discussion | 8 |
|
| 6 | [vb past] [been] under discussion | 8 |
|
