| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | may have [been] a [adj] | 80 |
|
| 2 | this may have [been] [adj] | 26 |
|
| 3 | this may have [been] a | 19 |
|
| 4 | this may have a [adj] | 9 |
|
