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