| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] a time when | 1443 |
|
| 2 | at a time when | 1342 |
|
| 3 | at a time when | 1342 |
|
| 4 | to a time when | 28 |
|
| 5 | to a time when | 28 |
|
| 6 | of a time when | 27 |
|
| 7 | of a time when | 27 |
|
| 8 | in a time when | 22 |
|
| 9 | in a time when | 22 |
|
| 10 | from a time when | 7 |
|
| 11 | from a time when | 7 |
|
| 12 | as a time when | 5 |
|
| 13 | as a time when | 5 |
|
