| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be sure that [pron] [was/were] [prep] | 5 |
|
| 2 | be sure that [pron] [was/were] [prep] | 5 |
|
| 3 | be sure that [pron] [was/were] [prep] | 5 |
|
