| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [ex0] [modal v] have been [noun pl] | 53 |
|
| 2 | [pron] may have been [noun pl] | 30 |
|
| 3 | [ex0] may have been [noun] | 27 |
|
| 4 | [ex0] may have [be] [noun pl] | 19 |
|
| 5 | [ex0] may [verb] been [noun pl] | 19 |
|
| 6 | [ex0] may have be [noun pl] | 19 |
|
| 7 | [ex0] may have [been] [noun pl] | 19 |
|
