| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | which [vb mod] have been a [adj] | 21 |
|
| 2 | which [modal v] have been a [adj] | 21 |
|
| 3 | which [modal v] have been a [adj] | 20 |
|
| 4 | which [modal v] have been a [adj] | 20 |
|
| 5 | which must have been a [adj] | 5 |
|
| 6 | which must have been a [adj] | 5 |
|
| 7 | which would have been a [adj] | 5 |
|
| 8 | which would have been a [adj] | 5 |
|
