| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | at the time [prep] [art] | 1254 |
|
| 2 | [v-ing] at the time [prep] | 62 |
|
| 3 | [v-ing] the time [prep] [art] | 10 |
|
| 4 | [v-ing] at the time [art] | 6 |
|
