| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | been [verb] at the time | 64 |
|
| 2 | [been] [vb pp] at the time | 60 |
|
| 3 | [been] effected at the time | 5 |
|
| 4 | [been] effect at the time | 5 |
|
