| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] place at a time [Wh adv] | 7 |
|
| 2 | [vb past] place at a time [Wh adv] | 7 |
|
| 3 | took place at [art] time [Wh adv] | 7 |
|
| 4 | [vb past] place at [art] time when | 7 |
|
| 5 | [vb past] place at [art] time [Wh adv] | 7 |
|
| 6 | [vb past] place at [art] time [Wh adv] | 7 |
|
