| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | can [not/n't] have been [det] | 11 |
|
| 2 | ca [not/n't] have [been] [det] | 6 |
|
| 3 | can n't have [been] [det] | 6 |
|
| 4 | can [not/n't] have [been] much | 6 |
|
| 5 | can not have [been] [det] | 5 |
|
| 6 | can [not/n't] have [been] [det] | 5 |
|
