| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adj] have been [verb] | 3851 |
|
| 2 | may have been [verb] | 1112 |
|
| 3 | [adj] may have been | 232 |
|
| 4 | [adj] may have [verb] | 182 |
|
