| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | do [not/n't] know at the [noun sg] | 20 |
|
| 2 | do not know at the [noun sg] | 20 |
|
| 3 | do [adv] know at the [noun sg] | 20 |
|
| 4 | do n't know at the [noun sg] | 17 |
|
| 5 | do [adv] know at the time | 13 |
|
| 6 | did [adv] know at the [noun sg] | 12 |
|
| 7 | do [adv] know at the [noun sg] | 6 |
|
| 8 | do [adv] know at the moment | 5 |
|
