| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] not be reduced to | 34 |
|
| 2 | [vb mod] not [be] reduced to | 34 |
|
| 3 | [modal v] not [be] reduced to | 33 |
|
| 4 | can not [be] reduced to | 28 |
|
| 5 | can not [be] reduced to | 27 |
|
