| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] have been use | 163 |
|
| 2 | [vb mod] have been used | 151 |
|
| 3 | could have been use | 50 |
|
| 4 | may have been use | 38 |
|
| 5 | might have been use | 25 |
|
| 6 | would have been use | 24 |
|
| 7 | [vb mod] have been using | 12 |
|
| 8 | must have been use | 11 |
|
| 9 | should have been use | 9 |
|
| 10 | will have been use | 6 |
|
