| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb pp] [prep] once by [art] | 10 |
|
| 2 | [vb pp] at once by [art] | 9 |
|
| 3 | [vb pp] [prep] once by a | 5 |
|
| 4 | [vb pp] [prep] once by the | 5 |
|
| 5 | [vb pp] [prep] once by the | 5 |
|
