| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | may well [vb infin] been [det] | 5 |
|
| 2 | may well have been [det] | 5 |
|
| 3 | may well [verb] been [det] | 5 |
|
| 4 | may well have been [det] | 5 |
|
