| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | may have been [det] [noun] | 21 |
|
| 2 | may [vb infin] been [det] [noun] | 21 |
|
| 3 | may [vb infin] been [det] [noun sg] | 16 |
|
| 4 | may [vb infin] been some [noun] | 9 |
|
