| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] at once [prep] the | 22 |
|
| 2 | [vb past] at [adv] to the | 9 |
|
| 3 | [vb past] at [adv] on the | 5 |
|
| 4 | [vb past] at least [prep] the | 5 |
|
