| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] [Wh det] [pron] [modal v] not | 20 |
|
| 2 | [adv] [Wh det] [pron] [vb mod] not | 20 |
|
| 3 | [adv] [pron] [pron] could not | 14 |
|
| 4 | [adv] [Wh det] [pron] could [adv] | 8 |
|
| 5 | [adv] [Wh det] [pron] could not | 5 |
|
| 6 | [adv] [Wh det] [pron] could not | 5 |
|
