| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | can [not/n't] have been | 146 |
|
| 2 | can [not/n't] have be | 89 |
|
| 3 | can not have be | 88 |
|
| 4 | ca [not/n't] have be | 57 |
|
| 5 | can n't have be | 57 |
|
