| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must be [adv] [adj] | 817 |
|
| 2 | [det] must be [adj] | 107 |
|
| 3 | [det] must be [adv] | 80 |
|
| 4 | [det] be [adv] [adj] | 67 |
|
