| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it should not have [be] | 7 |
|
| 2 | it should not [verb] [been] | 7 |
|
| 3 | it should not [vb infin] [be] | 7 |
|
| 4 | it should not [verb] be | 7 |
|
| 5 | it should not [verb] been | 7 |
|
| 6 | it should not [verb] [be] | 7 |
|
| 7 | it should not have [be] | 7 |
|
