| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | at [det] time [be] | 349 |
|
| 2 | [vb past] at [det] time | 146 |
|
| 3 | [vb past] [det] time [be] | 11 |
|
| 4 | [vb past] at [det] [be] | 5 |
|
