| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | so at [art] time | 34 |
|
| 2 | so at [art] time | 34 |
|
| 3 | so at the time | 28 |
|
| 4 | so at the time | 28 |
|
| 5 | so at a time | 6 |
|
| 6 | so at a time | 6 |
|
