| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] have changed | 181 |
|
| 2 | may have changed | 59 |
|
| 3 | would have changed | 39 |
|
| 4 | will have changed | 26 |
|
| 5 | must have changed | 20 |
|
| 6 | might have changed | 17 |
|
| 7 | could have changed | 11 |
|
| 8 | should have changed | 6 |
|
