| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] be [vb pp] [prep] [art] | 4648 |
|
| 2 | must be [vb pp] [prep] [art] | 2033 |
|
| 3 | must [adv] be [vb pp] [prep] | 449 |
|
| 4 | must [adv] be [prep] [art] | 40 |
|
| 5 | must [adv] be [vb pp] [art] | 14 |
|
