| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb pp] [subord] [verb] a | 438 |
|
| 2 | [vb pp] [verb] at a | 97 |
|
| 3 | [subord] [verb] at a | 84 |
|
| 4 | [vb pp] [subord] [verb] at | 57 |
|
