| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun pl] [vb mod] have been a | 45 |
|
| 2 | [noun pl] [vb mod] have [been] a | 45 |
|
| 3 | [noun pl] would have [been] a | 16 |
|
| 4 | [noun pl] may have [been] a | 11 |
|
| 5 | [noun pl] must have [been] a | 8 |
|
| 6 | [noun pl] might have [been] a | 6 |
|
