| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] not [verb] [adv prt] | 3837 |
|
| 2 | [modal v] not [verb] [adv prt] | 3837 |
|
| 3 | could not [verb] [adv] | 2313 |
|
| 4 | could [adv] [verb] [adv prt] | 1571 |
|
| 5 | could not [verb] [adv prt] | 930 |
|
