| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | which should [not/n't] be [vb pp] | 37 |
|
| 2 | which should [not/n't] [be] [vb pp] | 37 |
|
| 3 | which should [not/n't] [be] [vb pp] | 37 |
|
| 4 | which should not [be] [vb pp] | 34 |
|
