| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] [verb] know [pron] | 357 |
|
| 2 | [modal v] [verb] why [pron] | 246 |
|
| 3 | [verb] know why [pron] | 102 |
|
| 4 | [modal v] [verb] know why | 39 |
|
| 5 | [modal v] know why [pron] | 14 |
|
