| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it should [not/n't] [vb infin] [been] | 12 |
|
| 2 | it should [not/n't] [vb infin] been | 12 |
|
| 3 | it should [not/n't] have [be] | 12 |
|
| 4 | it should [not/n't] [vb infin] be | 12 |
|
| 5 | it should not [vb infin] [be] | 7 |
|
| 6 | it should n't [vb infin] [be] | 5 |
|
