| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | may have been [verb] [prep] | 591 |
|
| 2 | which may have been [verb] | 67 |
|
| 3 | which may have [verb] [prep] | 43 |
|
| 4 | which may have been [prep] | 7 |
|
