| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | at the time of [v-ing] [art] | 76 |
|
| 2 | at the time of [v-ing] the | 69 |
|
| 3 | at the time of [v-ing] the | 69 |
|
| 4 | at the time of writing [art] | 32 |
|
| 5 | at the time of making [art] | 17 |
|
