| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] [pron] can not be sure | 9 |
|
| 2 | [noun] [pers pn] can not be sure | 8 |
|
| 3 | [noun] we can not be sure | 5 |
|
| 4 | [noun] we can not be sure | 5 |
|
