| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | may [vb infin] been [prep] [det] [noun] | 7 |
|
| 2 | may have been [prep] [det] [noun] | 7 |
|
| 3 | may [vb infin] been [prep] [det] [noun sg] | 6 |
|
