| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb base] [prep] be sure | 74 |
|
| 2 | [vb base] to [be] sure | 74 |
|
| 3 | want [prep] [be] sure | 31 |
|
| 4 | need [prep] [be] sure | 25 |
|
| 5 | have [prep] [be] sure | 14 |
|
