| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] [verb] at [art] time when | 16 |
|
| 2 | [adv] [verb] at [art] time when | 14 |
|
| 3 | [adv] [vb pp] at [art] time when | 11 |
|
| 4 | [adv] [verb] at a time when | 9 |
|
| 5 | [adv] [verb] at the time when | 8 |
|
