| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must [not/n't] [be] | 814 |
|
| 2 | [coord] must [be] | 475 |
|
| 3 | [coord] [not/n't] [be] | 401 |
|
| 4 | [coord] must [not/n't] | 94 |
|
