| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | not know [pron] | 7072 |
|
| 2 | not [verb] [Wh pn] | 853 |
|
| 3 | not [vb infin] [Wh pn] | 787 |
|
| 4 | [adv] know [Wh pn] | 534 |
|
| 5 | not know [Wh pn] | 516 |
|
