| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | been [verb] by | 15026 |
|
| 2 | been [vb pp] by | 14990 |
|
| 3 | be reduced by | 464 |
|
| 4 | [be] reduced by | 464 |
|
| 5 | been reduced [prep] | 326 |
|
| 6 | [been] reduced by | 81 |
|
| 7 | been reduce by | 81 |
|
