| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] sure that [pers pn] know | 13 |
|
| 2 | be sure that [pers pn] know | 13 |
|
| 3 | [be] sure that [pers pn] know | 8 |
|
| 4 | [am/are] sure that [pers pn] know | 7 |
|
| 5 | [be] sure that you know | 7 |
|
