| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] [vb past] a | 47221 |
|
| 2 | [pron] [vb past] at | 13601 |
|
| 3 | [vb past] at a | 973 |
|
| 4 | [pron] at a | 772 |
|
