| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] n't [adv] [verb] | 3052 |
|
| 2 | [vb mod] n't [adv] [verb] | 3052 |
|
| 3 | could [adv] [adv] [verb] | 2437 |
|
| 4 | could [not/n't] [adv] [verb] | 1461 |
|
| 5 | could not [adv] [verb] | 1461 |
|
| 6 | could n't [adv] [verb] | 846 |
|
