| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | i [vb base] [not/n't] know [prep] [noun] | 37 |
|
| 2 | i [vb base] [adv] know [prep] [noun] | 37 |
|
| 3 | i [vb base] not know [prep] [noun] | 37 |
|
| 4 | i [vb base] n't know [prep] [noun] | 35 |
|
