| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | i [verb] [adv] know why | 696 |
|
| 2 | i do [adv] know why | 696 |
|
| 3 | i [vb base] [adv] know why | 682 |
|
| 4 | i do [adv] know why | 682 |
|
| 5 | i [vb past] [adv] know why | 14 |
|
| 6 | i did [adv] know why | 14 |
|
