| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | n't [verb] [pron] [modal v] [verb] | 1738 |
|
| 2 | could n't [verb] [pron] [verb] | 327 |
|
| 3 | could [verb] [pron] [modal v] [verb] | 61 |
|
| 4 | could n't [verb] [pron] [modal v] | 32 |
|
