| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] be sure that there | 9 |
|
| 2 | [prep] be sure that there | 9 |
|
| 3 | [prep] be sure that there | 9 |
|
| 4 | [prep] be sure that there | 8 |
|
| 5 | to be sure that there | 8 |
|
| 6 | to be sure that there | 8 |
|
