| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have not been [verb] | 4727 |
|
| 2 | have not been [vb pp] | 4212 |
|
| 3 | have [adv] been changed | 45 |
|
| 4 | have not been change | 21 |
|
| 5 | have not [been] changed | 21 |
|
| 6 | have not [be] changed | 21 |
|
| 7 | have not be changed | 21 |
|
| 8 | [verb] not been changed | 21 |
|
