| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | can [adv] be changed when | 6 |
|
| 2 | can not [be] changed when | 6 |
|
| 3 | can [not/n't] [be] changed when | 6 |
|
| 4 | can not [be] changed when | 6 |
|
