| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [not/n't] [verb] to have changed | 7 |
|
| 2 | [not/n't] [vb infin] have changed | 7 |
|
| 3 | [not/n't] seem have changed | 6 |
|
| 4 | [not/n't] seem have changed | 6 |
|
