| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] i do n't know | 1251 |
|
| 2 | [verb] [conj] i do n't | 459 |
|
| 3 | [verb] i do n't know | 365 |
|
| 4 | [verb] [conj] do n't know | 14 |
|
