| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | should [not/n't] [vb infin] or [vb infin] | 18 |
|
| 2 | should [not/n't] [vb infin] or [verb] | 18 |
|
| 3 | should not [vb infin] or [verb] | 14 |
|
