| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [not/n't] know [pron] | 7075 |
|
| 2 | [not/n't] [modal v] [pron] | 69 |
|
| 3 | [not/n't] know [modal v] | 15 |
|
| 4 | know [modal v] [pron] | 6 |
|
