| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] at the time [conj] | 143 |
|
| 2 | at the time [conj] [verb] | 57 |
|
| 3 | [verb] at the time [verb] | 31 |
|
| 4 | [verb] the time [conj] [verb] | 23 |
|
