| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be sure [that] | 1481 |
|
| 2 | [be] sure [that] | 1481 |
|
| 3 | am [adj] [that] | 1360 |
|
| 4 | [am/are] sure [that] | 846 |
|
| 5 | am sure [conj] | 541 |
|
