| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] [v-ing] time | 70 |
|
| 2 | [conj] at [v-ing] | 62 |
|
| 3 | at [v-ing] time | 32 |
|
| 4 | [conj] at time | 5 |
|
