| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] must be [verb] | 3134 |
|
| 2 | must be [verb] by | 795 |
|
| 3 | [pron] be [verb] by | 91 |
|
| 4 | [pron] must [verb] by | 46 |
|
| 5 | [pron] must be by | 10 |
|
