| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | which have been [verb] by the | 271 |
|
| 2 | which have been [verb] by the | 271 |
|
| 3 | which have been [vb pp] by the | 271 |
|
| 4 | which had been [verb] by the | 148 |
|
| 5 | which has been [verb] by the | 73 |
|
| 6 | which have been [verb] by the | 50 |
|
| 7 | which have been approved by the | 8 |
|
| 8 | which have been approve by the | 8 |
|
| 9 | which have been introduce by the | 6 |
|
| 10 | which have been introduced by the | 6 |
|
| 11 | which have been occupy by the | 5 |
|
| 12 | which have been occupied by the | 5 |
|
