| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | which have been [verb] about | 11 |
|
| 2 | which have [been] [verb] about | 11 |
|
| 3 | which have [been] [vb pp] about | 10 |
|
| 4 | which have [been] [verb] about | 8 |
|
