| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] [vb past] at [art] | 893 |
|
| 2 | [conj] at [art] time | 516 |
|
| 3 | [vb past] at [art] time | 397 |
|
| 4 | [conj] [vb past] [art] time | 50 |
|
