| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have not been a | 216 |
|
| 2 | have not be a | 179 |
|
| 3 | has not be a | 103 |
|
| 4 | had not be a | 94 |
|
| 5 | have not be an | 37 |
|
| 6 | have not be a | 10 |
|
| 7 | 's not be a | 8 |
|
