| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | at [adv] he [verb] [to-vb] | 9 |
|
| 2 | at [adv] he [vb past] [to-vb] | 8 |
|
| 3 | at once he [verb] [to-vb] | 5 |
|
