| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] [verb] at [noun] | 862 |
|
| 2 | then [verb] at [noun] | 126 |
|
| 3 | [vb past] then [verb] [noun] | 19 |
|
| 4 | [vb past] then [verb] at | 10 |
|
