| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [not/n't] have been | 2339 |
|
| 2 | have been [noun sg] | 1962 |
|
| 3 | [not/n't] have [noun sg] | 1069 |
|
| 4 | [not/n't] been [noun sg] | 59 |
|
