| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | may have been [prep] [adj] | 33 |
|
| 2 | [modal v] have been [prep] this | 23 |
|
| 3 | may have [be] [prep] this | 5 |
|
| 4 | may have be [prep] this | 5 |
|
| 5 | may [verb] been [prep] this | 5 |
|
| 6 | may have [been] [prep] this | 5 |
|
