| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] not been [v-ing] in | 11 |
|
| 2 | have not been [v-ing] in | 11 |
|
| 3 | [vb past] not been [v-ing] in | 7 |
|
| 4 | had not been [v-ing] in | 7 |
|
