| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | i do [adv] know how | 888 |
|
| 2 | i do [not/n't] know how | 888 |
|
| 3 | i do not know how | 887 |
|
| 4 | i do n't know how | 843 |
|
| 5 | i do not know how | 44 |
|
