| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it have been [art] [adj] | 879 |
|
| 2 | may have been [art] [adj] | 172 |
|
| 3 | it may have been [art] | 75 |
|
| 4 | it may have been [adj] | 48 |
|
| 5 | it may have [art] [adj] | 19 |
|
