| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun sg] at a time when | 266 |
|
| 2 | [noun pl] at a time when | 111 |
|
| 3 | [noun prp] at a time when | 40 |
|
| 4 | place at a time when | 13 |
|
| 5 | place at a time when | 12 |
|
| 6 | [n mass] at a time when | 9 |
|
| 7 | work at a time when | 5 |
|
| 8 | work at a time when | 5 |
|
| 9 | office at a time when | 5 |
|
