| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] n't [adv] know why | 31 |
|
| 2 | do n't [adv] know why | 31 |
|
| 3 | do n't [adv] know why | 25 |
|
| 4 | [vb base] n't [adv] know why | 25 |
|
| 5 | n't [adv] know why [pers pn] | 18 |
|
| 6 | n't [adv] know why [pron] | 18 |
|
| 7 | n't [adv] know why i | 7 |
|
| 8 | n't [adv] know why i | 7 |
|
