| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | at [art] time of [art] | 1196 |
|
| 2 | at the time of [art] | 1187 |
|
| 3 | at [art] time of the | 1166 |
|
| 4 | at [art] time of the | 1166 |
|
| 5 | at [art] time of a | 30 |
|
| 6 | at [art] time of a | 23 |
|
| 7 | at a time of [art] | 9 |
|
| 8 | at [art] time of an | 7 |
|
