| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [was/were] [adv] i do [adv] know | 6 |
|
| 2 | [was/were] [adv] i do [not/n't] know | 6 |
|
| 3 | [was/were] [adv] i do n't know | 6 |
|
| 4 | [was/were] [adv] i do not know | 6 |
|
