| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] at the time [prep] writing | 5 |
|
| 2 | [vb pp] at the time [prep] writing | 5 |
|
| 3 | [verb] at the time [prep] writing | 5 |
|
| 4 | [verb] at the time of writing | 5 |
|
| 5 | [verb] at the time of writing | 5 |
|
