| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] [not/n't] [adv] [verb] [art] | 1070 |
|
| 2 | [vb mod] [not/n't] [adv] [verb] [art] | 1070 |
|
| 3 | could [adv] [adv] [verb] [art] | 371 |
|
| 4 | could [not/n't] [adv] [verb] [art] | 214 |
|
