| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | which have been [vb pp] | 1075 |
|
| 2 | which have [vb pp] [noun] | 267 |
|
| 3 | have been [vb pp] [noun] | 228 |
|
| 4 | which have been [noun] | 10 |
|
