| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have n't been [vb pp] at | 13 |
|
| 2 | had n't been [verb] at | 8 |
|
| 3 | have n't been [verb] at | 8 |
|
| 4 | have n't been [v-ing] at | 5 |
|
