| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it be [vb pp] at [art] time | 16 |
|
| 2 | it was [verb] at [art] time | 16 |
|
| 3 | it be [verb] at the time | 13 |
|
| 4 | it be [verb] at a time | 5 |
|
