| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [prep] once by [art] | 12 |
|
| 2 | [vb pp] [prep] once by [art] | 10 |
|
| 3 | [verb] at once by [art] | 10 |
|
| 4 | [verb] [prep] once by the | 6 |
|
| 5 | [verb] [prep] once by a | 6 |
|
| 6 | [verb] [prep] once by the | 6 |
|
| 7 | [verb] [prep] once by a | 5 |
|
