| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have [been] [det] [adj] | 455 |
|
| 2 | may have [been] [adj] | 452 |
|
| 3 | may have [been] [det] | 49 |
|
| 4 | may have [det] [adj] | 49 |
|
