| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | been [verb] in | 11178 |
|
| 2 | been [vb pp] in | 10263 |
|
| 3 | be discussed in | 856 |
|
| 4 | [be] discussed in | 856 |
|
| 5 | been discussed [prep] | 189 |
|
| 6 | been discuss in | 83 |
|
| 7 | [been] discussed in | 81 |
|
