| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] [to-vb] at [pron] | 360 |
|
| 2 | then [vb past] [to-vb] [pron] | 126 |
|
| 3 | then [vb past] at [pron] | 49 |
|
| 4 | then [vb past] [to-vb] at | 20 |
|
