| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] which [vb mod] have been | 26 |
|
| 2 | of which [vb mod] have [been] | 23 |
|
| 3 | [prep] which would have [been] | 9 |
|
| 4 | [prep] which must have [been] | 6 |
|
| 5 | [prep] which may have [been] | 5 |
|
