| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] be a [adj] | 978 |
|
| 2 | must be a [adj] | 502 |
|
| 3 | [adv] must be [adj] | 36 |
|
| 4 | [adv] must be a | 20 |
|
