| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have to [be] [prep] | 584 |
|
| 2 | to [be] sure [prep] | 115 |
|
| 3 | have to [be] sure | 39 |
|
| 4 | have [be] sure [prep] | 8 |
|
