| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [not/n't] know [pron] | 7452 |
|
| 2 | [not/n't] [modal v] [pron] | 69 |
|
| 3 | know [modal v] [pron] | 23 |
|
| 4 | [not/n't] know [modal v] | 16 |
|
