| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have [been] [verb] in a | 776 |
|
| 2 | may have [been] [verb] in | 90 |
|
| 3 | may have [been] [verb] a | 15 |
|
| 4 | may have [verb] in a | 13 |
|
