| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] not even know which [noun] | 6 |
|
| 2 | [verb] not [adv] know which [noun] | 6 |
|
| 3 | [verb] not [adv] know which [noun sg] | 6 |
|
| 4 | do not [adv] know which [noun] | 6 |
|
| 5 | [verb] n't [adv] know which [noun] | 5 |
|
