| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been some [prep] | 14 |
|
| 2 | have been discussion [prep] | 10 |
|
| 3 | have been some discussion | 9 |
|
| 4 | been some discussion [prep] | 8 |
|
| 5 | have some discussion [prep] | 7 |
|
