| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] not be ignored | 152 |
|
| 2 | can not [be] ignored | 93 |
|
| 3 | could not [be] ignored | 36 |
|
| 4 | should not [be] ignored | 18 |
|
| 5 | must not [be] ignored | 5 |
|
