| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [not/n't] [verb] [prep] | 55377 |
|
| 2 | could [not/n't] [verb] | 21358 |
|
| 3 | could [verb] [prep] | 9783 |
|
| 4 | could [not/n't] [prep] | 160 |
|
