| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could not [verb] | 21336 |
|
| 2 | [vb mod] not get | 4004 |
|
| 3 | [modal v] not get | 4004 |
|
| 4 | could [adv] get | 1403 |
|
| 5 | could not get | 1102 |
|
