| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have not been [adv] since | 6 |
|
| 2 | [vb base] not been [adv] since | 6 |
|
| 3 | [verb] not been [adv] since | 6 |
|
| 4 | have not been [adv] since | 5 |
|
