| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [vb pp] from [art] | 2870 |
|
| 2 | must be [vb pp] from | 189 |
|
| 3 | must be [vb pp] [art] | 160 |
|
| 4 | must be from [art] | 6 |
|
