| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [verb] by [art] | 10348 |
|
| 2 | must be [verb] by | 795 |
|
| 3 | must be [verb] [art] | 270 |
|
| 4 | must [verb] by [art] | 19 |
|
