| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] have been [verb] | 7119 |
|
| 2 | [vb mod] have been [verb] | 7119 |
|
| 3 | may have [been] [verb] | 1112 |
|
| 4 | may [verb] been [verb] | 1112 |
|
| 5 | may have been [verb] | 1112 |
|
| 6 | may have be [verb] | 1112 |
|
| 7 | may have [be] [verb] | 1112 |
|
