| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] must be [adj] | 1754 |
|
| 2 | must be [adj] [prep] | 1038 |
|
| 3 | [pron] must be [prep] | 436 |
|
| 4 | [pron] be [adj] [prep] | 320 |
|
