| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | at [det] time | 7156 |
|
| 2 | [vb past] at [det] | 1237 |
|
| 3 | [vb past] [det] time | 777 |
|
| 4 | [vb past] at time | 41 |
|
