| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] n't | 83949 |
|
| 2 | [modal v] n't | 83949 |
|
| 3 | should [adv] | 17795 |
|
| 4 | should [not/n't] | 10741 |
|
| 5 | should not | 10733 |
|
| 6 | should n't | 4008 |
|
