| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] [vb mod] not [prep] | 59 |
|
| 2 | [conj] [modal v] not [prep] | 59 |
|
| 3 | [conj] could [adv] [prep] | 13 |
|
| 4 | [conj] could not [prep] | 8 |
|
