| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been a [adj] [noun] | 4439 |
|
| 2 | may have a [adj] [noun] | 280 |
|
| 3 | may have been a [noun] | 128 |
|
| 4 | may have been a [adj] | 94 |
|
| 5 | may have been [adj] [noun] | 53 |
|
