| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could not [verb] [adv] | 921 |
|
| 2 | [modal v] not get [adv] | 360 |
|
| 3 | could not get [adv] | 262 |
|
| 4 | could [adv] get [adv] | 99 |
|
