| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | do n't know [pron] | 5982 |
|
| 2 | do n't [verb] who | 535 |
|
| 3 | do [adv] know who | 459 |
|
| 4 | do [not/n't] know who | 458 |
|
| 5 | do not know who | 458 |
|
| 6 | do n't know [Wh pn] | 408 |
|
| 7 | [verb] n't know who | 405 |
|
| 8 | do n't know who | 405 |
|
