| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] been [verb] at [art] time | 24 |
|
| 2 | [vb past] be [verb] at the time | 23 |
|
| 3 | had be [verb] at [art] time | 22 |
|
| 4 | [vb past] be [vb pp] at [art] time | 22 |
|
