| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be sure that a | 36 |
|
| 2 | be sure that a | 29 |
|
| 3 | be sure that a | 14 |
|
| 4 | am sure that a | 10 |
|
| 5 | be sure that an | 7 |
|
| 6 | 'm sure that a | 5 |
|
| 7 | was sure that a | 5 |
|
