| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | were [verb] by [v-ing] the [adj] | 23 |
|
| 2 | were [vb pp] by [verb] the [adj] | 23 |
|
| 3 | were [verb] by [verb] the [adj] | 16 |
|
| 4 | were [verb] by using the [adj] | 5 |
|
| 5 | were obtained by [verb] the [adj] | 5 |
|
| 6 | were [verb] by [verb] the [num] | 5 |
|
| 7 | were obtain by [verb] the [adj] | 5 |
|
| 8 | were [verb] by use the [adj] | 5 |
|
