| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | by [verb] [art] | 13349 |
|
| 2 | by [v-ing] [art] | 13331 |
|
| 3 | [prep] reducing [art] | 596 |
|
| 4 | [prep] reducing [art] | 596 |
|
| 5 | by reducing [art] | 158 |
|
| 6 | by reduce [art] | 158 |
|
| 7 | by reducing [art] | 158 |
|
