| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | not [adv] [adv] | 7016 |
|
| 2 | could [adv] [adv] | 3235 |
|
| 3 | could not [adv] | 1875 |
|
| 4 | could not [adv] | 1863 |
|
