| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [not/n't] have been | 2339 |
|
| 2 | [not/n't] have [been] | 2159 |
|
| 3 | not have [been] | 1705 |
|
| 4 | n't have [been] | 631 |
|
| 5 | [not/n't] to have [been] | 98 |
|
| 6 | [not/n't] having [been] | 55 |
|
| 7 | [not/n't] have [been] | 21 |
|
| 8 | [not/n't] 've [been] | 5 |
|
