| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb pp] [verb] an | 1658 |
|
| 2 | [vb pp] [verb] at | 1277 |
|
| 3 | [verb] at an | 1157 |
|
| 4 | [vb pp] at an | 464 |
|
