| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | do n't know it | 248 |
|
| 2 | [vb base] n't know it | 119 |
|
| 3 | do n't know it | 119 |
|
| 4 | [vb past] n't know it | 108 |
|
| 5 | did n't know it | 108 |
|
| 6 | does n't know it | 19 |
|
| 7 | [vb -s] n't know it | 19 |
|
