| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] [v-ing] [to-vb] sure [that] [pron] | 7 |
|
| 2 | be [v-ing] [to-vb] sure [that] [pron] | 7 |
|
| 3 | [v-ing] [to-vb] sure [that] [pron] [verb] | 6 |
|
