| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | which must be [vb pp] by [art] | 21 |
|
| 2 | which must be [vb pp] by [art] | 21 |
|
| 3 | which must be [vb pp] by [art] | 21 |
|
| 4 | which must be [vb pp] by the | 18 |
|
