| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun pl] [vb base] at [art] time when | 5 |
|
| 2 | [noun pl] [vb base] at [art] time [Wh adv] | 5 |
|
| 3 | [noun pl] [vb base] at a time [Wh adv] | 5 |
|
| 4 | [noun pl] [vb base] at [art] time [Wh adv] | 5 |
|
| 5 | [noun pl] [vb base] at a time [Wh adv] | 5 |
|
