| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] [pron] a | 6510 |
|
| 2 | [vb past] [pron] at | 1866 |
|
| 3 | [vb past] at a | 973 |
|
| 4 | [pron] at a | 772 |
|
