| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | know why [pron] | 948 |
|
| 2 | know [adv] i | 922 |
|
| 3 | know [Wh adv] i | 837 |
|
| 4 | [verb] why i | 571 |
|
| 5 | know why i | 224 |
|
