| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | not have been | 2336 |
|
| 2 | not have [been] | 2156 |
|
| 3 | not have [been] | 1705 |
|
| 4 | n't have [been] | 631 |
|
| 5 | not to have [been] | 98 |
|
| 6 | not having [been] | 55 |
|
| 7 | not have [been] | 21 |
|
| 8 | not 've [been] | 5 |
|
