| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] [modal v] not [adv] [verb] [prep] | 26 |
|
| 2 | [conj] could [adv] [adv] [verb] [prep] | 10 |
|
| 3 | [conj] could not [adv] [verb] [prep] | 6 |
|
| 4 | [conj] could not [adv] [verb] [prep] | 6 |
|
