| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] have been a [adj] matter | 9 |
|
| 2 | [modal v] have been a [adj] matter | 9 |
|
| 3 | would have been a [adj] matter | 7 |
|
| 4 | would have been a [adj] matter | 7 |
|
